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Finding the Fourth Proportional to 71,373.20, 107,059.80 and 68,092.70

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Solution

The fourth proportional to 71,373.20, 107,059.80 and 68,092.70 is: 102,139.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,373.20 : 107,059.80 = 68,092.70 : x
  2. Step 2: Convert to fraction form
    71,373.20/107,059.80 = 68,092.70/x
  3. Step 3: Cross multiply
    71,373.20x = 107,059.80 × 68,092.70
  4. Step 4: Simplify right side
    71,373.20x = 7,289,990,843.46
  5. Step 5: Solve for x
    x = 7,289,990,843.46/71,373.20
  6. Step 6: Final answer
    x = 102,139.05

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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.