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Finding the Fourth Proportional to 84,691.88, 127,079.28 and 59,891.30

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Solution

The fourth proportional to 84,691.88, 127,079.28 and 59,891.30 is: 89,866.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,691.88 : 127,079.28 = 59,891.30 : x
  2. Step 2: Convert to fraction form
    84,691.88/127,079.28 = 59,891.30/x
  3. Step 3: Cross multiply
    84,691.88x = 127,079.28 × 59,891.30
  4. Step 4: Simplify right side
    84,691.88x = 7,610,943,123.41
  5. Step 5: Solve for x
    x = 7,610,943,123.41/84,691.88
  6. Step 6: Final answer
    x = 89,866.27

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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.