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Finding the Fourth Proportional to 87.99, 132.01 and 42.37

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Solution

The fourth proportional to 87.99, 132.01 and 42.37 is: 63.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87.99 : 132.01 = 42.37 : x
  2. Step 2: Convert to fraction form
    87.99/132.01 = 42.37/x
  3. Step 3: Cross multiply
    87.99x = 132.01 × 42.37
  4. Step 4: Simplify right side
    87.99x = 5,593.81
  5. Step 5: Solve for x
    x = 5,593.81/87.99
  6. Step 6: Final answer
    x = 63.58

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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.