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Finding the Fourth Proportional to 96.39, 132.93 and 61.43

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Solution

The fourth proportional to 96.39, 132.93 and 61.43 is: 84.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.39 : 132.93 = 61.43 : x
  2. Step 2: Convert to fraction form
    96.39/132.93 = 61.43/x
  3. Step 3: Cross multiply
    96.39x = 132.93 × 61.43
  4. Step 4: Simplify right side
    96.39x = 8,165.23
  5. Step 5: Solve for x
    x = 8,165.23/96.39
  6. Step 6: Final answer
    x = 84.71

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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.