Home / 87,785.28-131,371.74-71,805.60

Finding the Fourth Proportional to 87,785.28, 131,371.74 and 71,805.60

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Solution

The fourth proportional to 87,785.28, 131,371.74 and 71,805.60 is: 107,457.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,785.28 : 131,371.74 = 71,805.60 : x
  2. Step 2: Convert to fraction form
    87,785.28/131,371.74 = 71,805.60/x
  3. Step 3: Cross multiply
    87,785.28x = 131,371.74 × 71,805.60
  4. Step 4: Simplify right side
    87,785.28x = 9,433,226,613.74
  5. Step 5: Solve for x
    x = 9,433,226,613.74/87,785.28
  6. Step 6: Final answer
    x = 107,457.95

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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.