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Finding the Fourth Proportional to 73.99, 102.01 and 50.61

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Solution

The fourth proportional to 73.99, 102.01 and 50.61 is: 69.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.99 : 102.01 = 50.61 : x
  2. Step 2: Convert to fraction form
    73.99/102.01 = 50.61/x
  3. Step 3: Cross multiply
    73.99x = 102.01 × 50.61
  4. Step 4: Simplify right side
    73.99x = 5,162.73
  5. Step 5: Solve for x
    x = 5,162.73/73.99
  6. Step 6: Final answer
    x = 69.78

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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.