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Finding the Fourth Proportional to 95.92, 131.81 and 76.48

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Solution

The fourth proportional to 95.92, 131.81 and 76.48 is: 105.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.92 : 131.81 = 76.48 : x
  2. Step 2: Convert to fraction form
    95.92/131.81 = 76.48/x
  3. Step 3: Cross multiply
    95.92x = 131.81 × 76.48
  4. Step 4: Simplify right side
    95.92x = 10,080.83
  5. Step 5: Solve for x
    x = 10,080.83/95.92
  6. Step 6: Final answer
    x = 105.10

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.