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Finding the Fourth Proportional to 86.02, 129.54 and 62.14

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Solution

The fourth proportional to 86.02, 129.54 and 62.14 is: 93.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86.02 : 129.54 = 62.14 : x
  2. Step 2: Convert to fraction form
    86.02/129.54 = 62.14/x
  3. Step 3: Cross multiply
    86.02x = 129.54 × 62.14
  4. Step 4: Simplify right side
    86.02x = 8,049.62
  5. Step 5: Solve for x
    x = 8,049.62/86.02
  6. Step 6: Final answer
    x = 93.58

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.