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Finding the Fourth Proportional to 73,109.68, 109,819.88 and 68,843.66

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Solution

The fourth proportional to 73,109.68, 109,819.88 and 68,843.66 is: 103,411.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,109.68 : 109,819.88 = 68,843.66 : x
  2. Step 2: Convert to fraction form
    73,109.68/109,819.88 = 68,843.66/x
  3. Step 3: Cross multiply
    73,109.68x = 109,819.88 × 68,843.66
  4. Step 4: Simplify right side
    73,109.68x = 7,560,402,479.96
  5. Step 5: Solve for x
    x = 7,560,402,479.96/73,109.68
  6. Step 6: Final answer
    x = 103,411.78

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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.