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Finding the Fourth Proportional to 71,691.88, 98,944.02 and 43,398.04

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Solution

The fourth proportional to 71,691.88, 98,944.02 and 43,398.04 is: 59,894.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,691.88 : 98,944.02 = 43,398.04 : x
  2. Step 2: Convert to fraction form
    71,691.88/98,944.02 = 43,398.04/x
  3. Step 3: Cross multiply
    71,691.88x = 98,944.02 × 43,398.04
  4. Step 4: Simplify right side
    71,691.88x = 4,293,976,537.72
  5. Step 5: Solve for x
    x = 4,293,976,537.72/71,691.88
  6. Step 6: Final answer
    x = 59,894.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.