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Finding the Fourth Proportional to 72,438.64, 108,673.32 and 22,517.52

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Solution

The fourth proportional to 72,438.64, 108,673.32 and 22,517.52 is: 33,781.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,438.64 : 108,673.32 = 22,517.52 : x
  2. Step 2: Convert to fraction form
    72,438.64/108,673.32 = 22,517.52/x
  3. Step 3: Cross multiply
    72,438.64x = 108,673.32 × 22,517.52
  4. Step 4: Simplify right side
    72,438.64x = 2,447,053,656.57
  5. Step 5: Solve for x
    x = 2,447,053,656.57/72,438.64
  6. Step 6: Final answer
    x = 33,781.05

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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.