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Finding the Fourth Proportional to 72,332.80, 108,489.20 and 22,447.20

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Solution

The fourth proportional to 72,332.80, 108,489.20 and 22,447.20 is: 33,667.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,332.80 : 108,489.20 = 22,447.20 : x
  2. Step 2: Convert to fraction form
    72,332.80/108,489.20 = 22,447.20/x
  3. Step 3: Cross multiply
    72,332.80x = 108,489.20 × 22,447.20
  4. Step 4: Simplify right side
    72,332.80x = 2,435,278,770.24
  5. Step 5: Solve for x
    x = 2,435,278,770.24/72,332.80
  6. Step 6: Final answer
    x = 33,667.70

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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.