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Finding the Fourth Proportional to 67,906.60, 101,936.70 and 40,220.20

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Solution

The fourth proportional to 67,906.60, 101,936.70 and 40,220.20 is: 60,375.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,906.60 : 101,936.70 = 40,220.20 : x
  2. Step 2: Convert to fraction form
    67,906.60/101,936.70 = 40,220.20/x
  3. Step 3: Cross multiply
    67,906.60x = 101,936.70 × 40,220.20
  4. Step 4: Simplify right side
    67,906.60x = 4,099,914,461.34
  5. Step 5: Solve for x
    x = 4,099,914,461.34/67,906.60
  6. Step 6: Final answer
    x = 60,375.79

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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.