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Finding the Fourth Proportional to 72,654.82, 108,979.27 and 25,280.75

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Solution

The fourth proportional to 72,654.82, 108,979.27 and 25,280.75 is: 37,920.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,654.82 : 108,979.27 = 25,280.75 : x
  2. Step 2: Convert to fraction form
    72,654.82/108,979.27 = 25,280.75/x
  3. Step 3: Cross multiply
    72,654.82x = 108,979.27 × 25,280.75
  4. Step 4: Simplify right side
    72,654.82x = 2,755,077,889.30
  5. Step 5: Solve for x
    x = 2,755,077,889.30/72,654.82
  6. Step 6: Final answer
    x = 37,920.10

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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.