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Finding the Fourth Proportional to 86,691.27, 130,041.41 and 27,531.57

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Solution

The fourth proportional to 86,691.27, 130,041.41 and 27,531.57 is: 41,298.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,691.27 : 130,041.41 = 27,531.57 : x
  2. Step 2: Convert to fraction form
    86,691.27/130,041.41 = 27,531.57/x
  3. Step 3: Cross multiply
    86,691.27x = 130,041.41 × 27,531.57
  4. Step 4: Simplify right side
    86,691.27x = 3,580,244,044.66
  5. Step 5: Solve for x
    x = 3,580,244,044.66/86,691.27
  6. Step 6: Final answer
    x = 41,298.78

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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.