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Finding the Fourth Proportional to 71,737.20, 107,557.20 and 38,008.80

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Solution

The fourth proportional to 71,737.20, 107,557.20 and 38,008.80 is: 56,987.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,737.20 : 107,557.20 = 38,008.80 : x
  2. Step 2: Convert to fraction form
    71,737.20/107,557.20 = 38,008.80/x
  3. Step 3: Cross multiply
    71,737.20x = 107,557.20 × 38,008.80
  4. Step 4: Simplify right side
    71,737.20x = 4,088,120,103.36
  5. Step 5: Solve for x
    x = 4,088,120,103.36/71,737.20
  6. Step 6: Final answer
    x = 56,987.45

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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.