Home / 83,931.20-125,785.52-31,287.68

Finding the Fourth Proportional to 83,931.20, 125,785.52 and 31,287.68

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Solution

The fourth proportional to 83,931.20, 125,785.52 and 31,287.68 is: 46,890.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,931.20 : 125,785.52 = 31,287.68 : x
  2. Step 2: Convert to fraction form
    83,931.20/125,785.52 = 31,287.68/x
  3. Step 3: Cross multiply
    83,931.20x = 125,785.52 × 31,287.68
  4. Step 4: Simplify right side
    83,931.20x = 3,935,537,098.39
  5. Step 5: Solve for x
    x = 3,935,537,098.39/83,931.20
  6. Step 6: Final answer
    x = 46,890.04

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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.