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Finding the Fourth Proportional to 67.89, 101.85 and 25.14

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Solution

The fourth proportional to 67.89, 101.85 and 25.14 is: 37.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.89 : 101.85 = 25.14 : x
  2. Step 2: Convert to fraction form
    67.89/101.85 = 25.14/x
  3. Step 3: Cross multiply
    67.89x = 101.85 × 25.14
  4. Step 4: Simplify right side
    67.89x = 2,560.51
  5. Step 5: Solve for x
    x = 2,560.51/67.89
  6. Step 6: Final answer
    x = 37.72

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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.