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Finding the Fourth Proportional to 67,869.70, 101,720.82 and 49,213.78

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Solution

The fourth proportional to 67,869.70, 101,720.82 and 49,213.78 is: 73,759.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,869.70 : 101,720.82 = 49,213.78 : x
  2. Step 2: Convert to fraction form
    67,869.70/101,720.82 = 49,213.78/x
  3. Step 3: Cross multiply
    67,869.70x = 101,720.82 × 49,213.78
  4. Step 4: Simplify right side
    67,869.70x = 5,006,066,056.90
  5. Step 5: Solve for x
    x = 5,006,066,056.90/67,869.70
  6. Step 6: Final answer
    x = 73,759.96

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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.