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Finding the Fourth Proportional to 54,755.66, 82,134.15 and 21,491.39

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Solution

The fourth proportional to 54,755.66, 82,134.15 and 21,491.39 is: 32,237.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,755.66 : 82,134.15 = 21,491.39 : x
  2. Step 2: Convert to fraction form
    54,755.66/82,134.15 = 21,491.39/x
  3. Step 3: Cross multiply
    54,755.66x = 82,134.15 × 21,491.39
  4. Step 4: Simplify right side
    54,755.66x = 1,765,177,049.97
  5. Step 5: Solve for x
    x = 1,765,177,049.97/54,755.66
  6. Step 6: Final answer
    x = 32,237.34

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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.