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Finding the Fourth Proportional to 80.11, 110.52 and 49.00

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Solution

The fourth proportional to 80.11, 110.52 and 49.00 is: 67.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80.11 : 110.52 = 49.00 : x
  2. Step 2: Convert to fraction form
    80.11/110.52 = 49.00/x
  3. Step 3: Cross multiply
    80.11x = 110.52 × 49.00
  4. Step 4: Simplify right side
    80.11x = 5,414.96
  5. Step 5: Solve for x
    x = 5,414.96/80.11
  6. Step 6: Final answer
    x = 67.60

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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.