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Finding the Fourth Proportional to 39,468, 59,231.22 and 18,691.56

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Solution

The fourth proportional to 39,468, 59,231.22 and 18,691.56 is: 28,051.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,468 : 59,231.22 = 18,691.56 : x
  2. Step 2: Convert to fraction form
    39,468/59,231.22 = 18,691.56/x
  3. Step 3: Cross multiply
    39,468x = 59,231.22 × 18,691.56
  4. Step 4: Simplify right side
    39,468x = 1,107,123,902.50
  5. Step 5: Solve for x
    x = 1,107,123,902.50/39,468
  6. Step 6: Final answer
    x = 28,051.18

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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.