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Finding the Fourth Proportional to 72,234.86, 108,253.87 and 34,792.20

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Solution

The fourth proportional to 72,234.86, 108,253.87 and 34,792.20 is: 52,140.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,234.86 : 108,253.87 = 34,792.20 : x
  2. Step 2: Convert to fraction form
    72,234.86/108,253.87 = 34,792.20/x
  3. Step 3: Cross multiply
    72,234.86x = 108,253.87 × 34,792.20
  4. Step 4: Simplify right side
    72,234.86x = 3,766,390,208.83
  5. Step 5: Solve for x
    x = 3,766,390,208.83/72,234.86
  6. Step 6: Final answer
    x = 52,140.90

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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.