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Finding the Fourth Proportional to 80.07, 110.39 and 67.74

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Solution

The fourth proportional to 80.07, 110.39 and 67.74 is: 93.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    80.07 : 110.39 = 67.74 : x
  2. Step 2: Convert to fraction form
    80.07/110.39 = 67.74/x
  3. Step 3: Cross multiply
    80.07x = 110.39 × 67.74
  4. Step 4: Simplify right side
    80.07x = 7,477.48
  5. Step 5: Solve for x
    x = 7,477.48/80.07
  6. Step 6: Final answer
    x = 93.39

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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.