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Finding the Fourth Proportional to 86,132.97, 118,849.05 and 47,891.43

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Solution

The fourth proportional to 86,132.97, 118,849.05 and 47,891.43 is: 66,082.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,132.97 : 118,849.05 = 47,891.43 : x
  2. Step 2: Convert to fraction form
    86,132.97/118,849.05 = 47,891.43/x
  3. Step 3: Cross multiply
    86,132.97x = 118,849.05 × 47,891.43
  4. Step 4: Simplify right side
    86,132.97x = 5,691,850,958.64
  5. Step 5: Solve for x
    x = 5,691,850,958.64/86,132.97
  6. Step 6: Final answer
    x = 66,082.14

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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.