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Finding the Fourth Proportional to 73.95, 102.05 and 41.21

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Solution

The fourth proportional to 73.95, 102.05 and 41.21 is: 56.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.95 : 102.05 = 41.21 : x
  2. Step 2: Convert to fraction form
    73.95/102.05 = 41.21/x
  3. Step 3: Cross multiply
    73.95x = 102.05 × 41.21
  4. Step 4: Simplify right side
    73.95x = 4,204.97
  5. Step 5: Solve for x
    x = 4,204.97/73.95
  6. Step 6: Final answer
    x = 56.86

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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.