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Finding the Fourth Proportional to 95.56, 132.12 and 71.30

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Solution

The fourth proportional to 95.56, 132.12 and 71.30 is: 98.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.56 : 132.12 = 71.30 : x
  2. Step 2: Convert to fraction form
    95.56/132.12 = 71.30/x
  3. Step 3: Cross multiply
    95.56x = 132.12 × 71.30
  4. Step 4: Simplify right side
    95.56x = 9,420.16
  5. Step 5: Solve for x
    x = 9,420.16/95.56
  6. Step 6: Final answer
    x = 98.58

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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.