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Finding the Fourth Proportional to 72,081.52, 108,132.60 and 22,165.80

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Solution

The fourth proportional to 72,081.52, 108,132.60 and 22,165.80 is: 33,251.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,081.52 : 108,132.60 = 22,165.80 : x
  2. Step 2: Convert to fraction form
    72,081.52/108,132.60 = 22,165.80/x
  3. Step 3: Cross multiply
    72,081.52x = 108,132.60 × 22,165.80
  4. Step 4: Simplify right side
    72,081.52x = 2,396,845,585.08
  5. Step 5: Solve for x
    x = 2,396,845,585.08/72,081.52
  6. Step 6: Final answer
    x = 33,251.87

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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.