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Finding the Fourth Proportional to 71.55, 107.06 and 60.14

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Solution

The fourth proportional to 71.55, 107.06 and 60.14 is: 89.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71.55 : 107.06 = 60.14 : x
  2. Step 2: Convert to fraction form
    71.55/107.06 = 60.14/x
  3. Step 3: Cross multiply
    71.55x = 107.06 × 60.14
  4. Step 4: Simplify right side
    71.55x = 6,437.75
  5. Step 5: Solve for x
    x = 6,437.75/71.55
  6. Step 6: Final answer
    x = 89.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.