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Finding the Fourth Proportional to 61,139.52, 91,631.52 and 27,877.68

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Solution

The fourth proportional to 61,139.52, 91,631.52 and 27,877.68 is: 41,781.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,139.52 : 91,631.52 = 27,877.68 : x
  2. Step 2: Convert to fraction form
    61,139.52/91,631.52 = 27,877.68/x
  3. Step 3: Cross multiply
    61,139.52x = 91,631.52 × 27,877.68
  4. Step 4: Simplify right side
    61,139.52x = 2,554,474,192.47
  5. Step 5: Solve for x
    x = 2,554,474,192.47/61,139.52
  6. Step 6: Final answer
    x = 41,781.06

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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.