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Finding the Fourth Proportional to 72,502.24, 108,759.84 and 28,127.92

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Solution

The fourth proportional to 72,502.24, 108,759.84 and 28,127.92 is: 42,194.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,502.24 : 108,759.84 = 28,127.92 : x
  2. Step 2: Convert to fraction form
    72,502.24/108,759.84 = 28,127.92/x
  3. Step 3: Cross multiply
    72,502.24x = 108,759.84 × 28,127.92
  4. Step 4: Simplify right side
    72,502.24x = 3,059,188,078.73
  5. Step 5: Solve for x
    x = 3,059,188,078.73/72,502.24
  6. Step 6: Final answer
    x = 42,194.39

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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.