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Finding the Fourth Proportional to 251,591.79, 377,311.13 and 71,691.90

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Solution

The fourth proportional to 251,591.79, 377,311.13 and 71,691.90 is: 107,516.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,591.79 : 377,311.13 = 71,691.90 : x
  2. Step 2: Convert to fraction form
    251,591.79/377,311.13 = 71,691.90/x
  3. Step 3: Cross multiply
    251,591.79x = 377,311.13 × 71,691.90
  4. Step 4: Simplify right side
    251,591.79x = 27,050,151,980.08
  5. Step 5: Solve for x
    x = 27,050,151,980.08/251,591.79
  6. Step 6: Final answer
    x = 107,516.04

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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.