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Finding the Fourth Proportional to 99,520, 149,279.07 and 40,341.61

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Solution

The fourth proportional to 99,520, 149,279.07 and 40,341.61 is: 60,512.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,520 : 149,279.07 = 40,341.61 : x
  2. Step 2: Convert to fraction form
    99,520/149,279.07 = 40,341.61/x
  3. Step 3: Cross multiply
    99,520x = 149,279.07 × 40,341.61
  4. Step 4: Simplify right side
    99,520x = 6,022,158,023.10
  5. Step 5: Solve for x
    x = 6,022,158,023.10/99,520
  6. Step 6: Final answer
    x = 60,512.04

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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.