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Finding the Fourth Proportional to 67,563.50, 101,361.66 and 20,816.38

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Solution

The fourth proportional to 67,563.50, 101,361.66 and 20,816.38 is: 31,229.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,563.50 : 101,361.66 = 20,816.38 : x
  2. Step 2: Convert to fraction form
    67,563.50/101,361.66 = 20,816.38/x
  3. Step 3: Cross multiply
    67,563.50x = 101,361.66 × 20,816.38
  4. Step 4: Simplify right side
    67,563.50x = 2,109,982,221.10
  5. Step 5: Solve for x
    x = 2,109,982,221.10/67,563.50
  6. Step 6: Final answer
    x = 31,229.62

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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.