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Finding the Fourth Proportional to 81,654.72, 122,482.08 and 26,255.04

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Solution

The fourth proportional to 81,654.72, 122,482.08 and 26,255.04 is: 39,382.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,654.72 : 122,482.08 = 26,255.04 : x
  2. Step 2: Convert to fraction form
    81,654.72/122,482.08 = 26,255.04/x
  3. Step 3: Cross multiply
    81,654.72x = 122,482.08 × 26,255.04
  4. Step 4: Simplify right side
    81,654.72x = 3,215,771,909.68
  5. Step 5: Solve for x
    x = 3,215,771,909.68/81,654.72
  6. Step 6: Final answer
    x = 39,382.56

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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.