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Finding the Fourth Proportional to 72,489.17, 108,765.06 and 39,232.72

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Solution

The fourth proportional to 72,489.17, 108,765.06 and 39,232.72 is: 58,866.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,489.17 : 108,765.06 = 39,232.72 : x
  2. Step 2: Convert to fraction form
    72,489.17/108,765.06 = 39,232.72/x
  3. Step 3: Cross multiply
    72,489.17x = 108,765.06 × 39,232.72
  4. Step 4: Simplify right side
    72,489.17x = 4,267,149,144.76
  5. Step 5: Solve for x
    x = 4,267,149,144.76/72,489.17
  6. Step 6: Final answer
    x = 58,866.02

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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.