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Finding the Fourth Proportional to 73.91, 110.81 and 41.40

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Solution

The fourth proportional to 73.91, 110.81 and 41.40 is: 62.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.91 : 110.81 = 41.40 : x
  2. Step 2: Convert to fraction form
    73.91/110.81 = 41.40/x
  3. Step 3: Cross multiply
    73.91x = 110.81 × 41.40
  4. Step 4: Simplify right side
    73.91x = 4,587.33
  5. Step 5: Solve for x
    x = 4,587.33/73.91
  6. Step 6: Final answer
    x = 62.07

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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.