Home / 82,668.40-124,002.60-57,785.20

Finding the Fourth Proportional to 82,668.40, 124,002.60 and 57,785.20

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Solution

The fourth proportional to 82,668.40, 124,002.60 and 57,785.20 is: 86,677.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,668.40 : 124,002.60 = 57,785.20 : x
  2. Step 2: Convert to fraction form
    82,668.40/124,002.60 = 57,785.20/x
  3. Step 3: Cross multiply
    82,668.40x = 124,002.60 × 57,785.20
  4. Step 4: Simplify right side
    82,668.40x = 7,165,515,041.52
  5. Step 5: Solve for x
    x = 7,165,515,041.52/82,668.40
  6. Step 6: Final answer
    x = 86,677.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.