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Finding the Fourth Proportional to 73,234.30, 109,851.45 and 72,715.90

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Solution

The fourth proportional to 73,234.30, 109,851.45 and 72,715.90 is: 109,073.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,234.30 : 109,851.45 = 72,715.90 : x
  2. Step 2: Convert to fraction form
    73,234.30/109,851.45 = 72,715.90/x
  3. Step 3: Cross multiply
    73,234.30x = 109,851.45 × 72,715.90
  4. Step 4: Simplify right side
    73,234.30x = 7,987,947,053.06
  5. Step 5: Solve for x
    x = 7,987,947,053.06/73,234.30
  6. Step 6: Final answer
    x = 109,073.85

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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.