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Finding the Fourth Proportional to 109,471.53, 151,044.94 and 66,449.96

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Solution

The fourth proportional to 109,471.53, 151,044.94 and 66,449.96 is: 91,685.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,471.53 : 151,044.94 = 66,449.96 : x
  2. Step 2: Convert to fraction form
    109,471.53/151,044.94 = 66,449.96/x
  3. Step 3: Cross multiply
    109,471.53x = 151,044.94 × 66,449.96
  4. Step 4: Simplify right side
    109,471.53x = 10,036,930,115.46
  5. Step 5: Solve for x
    x = 10,036,930,115.46/109,471.53
  6. Step 6: Final answer
    x = 91,685.30

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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.