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Finding the Fourth Proportional to 87,982.88, 132,028.32 and 73,372.64

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Solution

The fourth proportional to 87,982.88, 132,028.32 and 73,372.64 is: 110,103.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,982.88 : 132,028.32 = 73,372.64 : x
  2. Step 2: Convert to fraction form
    87,982.88/132,028.32 = 73,372.64/x
  3. Step 3: Cross multiply
    87,982.88x = 132,028.32 × 73,372.64
  4. Step 4: Simplify right side
    87,982.88x = 9,687,266,393.16
  5. Step 5: Solve for x
    x = 9,687,266,393.16/87,982.88
  6. Step 6: Final answer
    x = 110,103.99

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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.