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Finding the Fourth Proportional to 71,500.59, 107,251.62 and 21,581.10

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Solution

The fourth proportional to 71,500.59, 107,251.62 and 21,581.10 is: 32,371.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,500.59 : 107,251.62 = 21,581.10 : x
  2. Step 2: Convert to fraction form
    71,500.59/107,251.62 = 21,581.10/x
  3. Step 3: Cross multiply
    71,500.59x = 107,251.62 × 21,581.10
  4. Step 4: Simplify right side
    71,500.59x = 2,314,607,936.38
  5. Step 5: Solve for x
    x = 2,314,607,936.38/71,500.59
  6. Step 6: Final answer
    x = 32,371.87

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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.