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Finding the Fourth Proportional to 58,479.77, 80,711.17 and 38,394.90

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Solution

The fourth proportional to 58,479.77, 80,711.17 and 38,394.90 is: 52,990.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,479.77 : 80,711.17 = 38,394.90 : x
  2. Step 2: Convert to fraction form
    58,479.77/80,711.17 = 38,394.90/x
  3. Step 3: Cross multiply
    58,479.77x = 80,711.17 × 38,394.90
  4. Step 4: Simplify right side
    58,479.77x = 3,098,897,301.03
  5. Step 5: Solve for x
    x = 3,098,897,301.03/58,479.77
  6. Step 6: Final answer
    x = 52,990.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.