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Finding the Fourth Proportional to 96.05, 132.36 and 81.47

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Solution

The fourth proportional to 96.05, 132.36 and 81.47 is: 112.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.05 : 132.36 = 81.47 : x
  2. Step 2: Convert to fraction form
    96.05/132.36 = 81.47/x
  3. Step 3: Cross multiply
    96.05x = 132.36 × 81.47
  4. Step 4: Simplify right side
    96.05x = 10,784.10
  5. Step 5: Solve for x
    x = 10,784.10/96.05
  6. Step 6: Final answer
    x = 112.27

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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.