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Finding the Fourth Proportional to 99,754.75, 149,660.25 and 40,632.85

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Solution

The fourth proportional to 99,754.75, 149,660.25 and 40,632.85 is: 60,960.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,754.75 : 149,660.25 = 40,632.85 : x
  2. Step 2: Convert to fraction form
    99,754.75/149,660.25 = 40,632.85/x
  3. Step 3: Cross multiply
    99,754.75x = 149,660.25 × 40,632.85
  4. Step 4: Simplify right side
    99,754.75x = 6,081,122,489.21
  5. Step 5: Solve for x
    x = 6,081,122,489.21/99,754.75
  6. Step 6: Final answer
    x = 60,960.73

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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.