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Finding the Fourth Proportional to 74.02, 110.81 and 41.03

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Solution

The fourth proportional to 74.02, 110.81 and 41.03 is: 61.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.02 : 110.81 = 41.03 : x
  2. Step 2: Convert to fraction form
    74.02/110.81 = 41.03/x
  3. Step 3: Cross multiply
    74.02x = 110.81 × 41.03
  4. Step 4: Simplify right side
    74.02x = 4,546.74
  5. Step 5: Solve for x
    x = 4,546.74/74.02
  6. Step 6: Final answer
    x = 61.42

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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.