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Finding the Fourth Proportional to 81,062.44, 111,863.79 and 45,251.66

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Solution

The fourth proportional to 81,062.44, 111,863.79 and 45,251.66 is: 62,445.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,062.44 : 111,863.79 = 45,251.66 : x
  2. Step 2: Convert to fraction form
    81,062.44/111,863.79 = 45,251.66/x
  3. Step 3: Cross multiply
    81,062.44x = 111,863.79 × 45,251.66
  4. Step 4: Simplify right side
    81,062.44x = 5,062,022,471.05
  5. Step 5: Solve for x
    x = 5,062,022,471.05/81,062.44
  6. Step 6: Final answer
    x = 62,445.97

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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.