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Finding the Fourth Proportional to 100,691.81, 151,044.39 and 29,620.82

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Solution

The fourth proportional to 100,691.81, 151,044.39 and 29,620.82 is: 44,433.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,691.81 : 151,044.39 = 29,620.82 : x
  2. Step 2: Convert to fraction form
    100,691.81/151,044.39 = 29,620.82/x
  3. Step 3: Cross multiply
    100,691.81x = 151,044.39 × 29,620.82
  4. Step 4: Simplify right side
    100,691.81x = 4,474,058,688.20
  5. Step 5: Solve for x
    x = 4,474,058,688.20/100,691.81
  6. Step 6: Final answer
    x = 44,433.19

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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.