857 Is What Percent Of 108

85.7 is What Percent of 108? A Step-by-Step Guide

Introduction:

This article explores how to calculate the percentage one number represents of another. Specifically, we will determine what percentage 85.7 represents of 108. Understanding percentages is crucial in various real-life situations, from calculating discounts and tax rates to analyzing data and understanding proportions. This guide provides a clear, step-by-step approach to solving this problem and offers additional insights to broaden your understanding of percentage calculations.

1. Understanding the Concept of Percentage:

A percentage is a fraction or ratio expressed as a number out of 100. The symbol "%" represents "per cent," meaning "out of one hundred." For instance, 50% means 50 out of 100, which simplifies to ½ or 0.5. When we ask "85.7 is what percent of 108?", we're asking what fraction of 108 is 85.7, and then expressing that fraction as a number out of 100.

2. Setting up the Equation:

To find the percentage, we need to set up a simple equation. We can represent the problem as follows:

`x% of 108 = 85.7`

Here, 'x' represents the unknown percentage we need to find. We can rewrite this equation in a more mathematically solvable form:

`(x/100) 108 = 85.7`

This equation states that 'x' percent (x/100) of 108 is equal to 85.7.

3. Solving for x:

To solve for 'x', we need to isolate it on one side of the equation. We can do this by following these steps:

Step 1: Divide both sides by 108: This isolates the (x/100) term.

`(x/100) = 85.7 / 108`

`(x/100) ≈ 0.7935`

Step 2: Multiply both sides by 100: This gives us the value of x, representing the percentage.

`x ≈ 0.7935 100`

`x ≈ 79.35`

Therefore, 85.7 is approximately 79.35% of 108.

4. Practical Application: Scenario Example

Imagine you're a salesperson who sold 85.7 units of a product out of a total of 108 units available. To calculate your sales performance as a percentage, you would use the same method outlined above. Your sales percentage would be approximately 79.35%, indicating that you sold almost 80% of the available stock.

Another example might involve calculating your score on a test. If you got 85.7 points out of a possible 108 points, your score would be approximately 79.35%.

5. Understanding Rounding and Precision:

In our calculation, we obtained a result of approximately 79.35%. The use of "approximately" is important because we rounded the decimal value. The actual value is slightly more precise, but 79.35% provides a sufficiently accurate representation for most practical purposes. The level of precision required depends on the context. In some cases, you might need more decimal places for greater accuracy, while in others, rounding to the nearest whole number might suffice.

6. Alternative Calculation Method (Using Proportions):

The percentage can also be calculated using proportions. We can set up a proportion as follows:

`85.7 / 108 = x / 100`

Cross-multiplying, we get:

`108x = 8570`

Dividing both sides by 108:

`x = 8570 / 108 ≈ 79.35`

This method yields the same result, confirming our previous calculation.

Summary:

This article demonstrated how to calculate the percentage one number represents of another, specifically determining that 85.7 is approximately 79.35% of 108. We explored the concept of percentages, established the relevant equation, solved for the unknown variable, and presented practical examples to illustrate the application of this calculation in real-world scenarios. We also discussed different calculation methods and the importance of understanding rounding and precision in percentage calculations.

Frequently Asked Questions (FAQs):

1. What if the numbers are decimals with many decimal places? The process remains the same. Use a calculator to perform the divisions accurately, and then multiply by 100 to find the percentage. Pay attention to rounding as needed depending on the level of precision required.

2. How can I perform this calculation using a spreadsheet program like Excel or Google Sheets? You can use the formula `=(85.7/108)100` in a cell to obtain the percentage directly.

3. Can I use this method for any two numbers? Yes, this method works for any two numbers where you want to find what percentage the first number represents of the second number.

4. What if I want to find what number represents a specific percentage of another number? You would use a slightly modified formula: (Percentage/100) Number. For example, to find 25% of 100, you would calculate (25/100) 100 = 25.

5. Why is understanding percentages important? Percentages are fundamental to understanding proportions, ratios, and rates of change. They are widely used in various fields, including finance, business, science, and everyday life, for tasks such as calculating discounts, interest rates, tax, and analyzing data.

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857 Is What Percent Of 108

85.7 is What Percent of 108? A Step-by-Step Guide

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