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Finding the Fourth Proportional to 68,757.70, 103,138.98 and 22,004.50

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Solution

The fourth proportional to 68,757.70, 103,138.98 and 22,004.50 is: 33,007.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,757.70 : 103,138.98 = 22,004.50 : x
  2. Step 2: Convert to fraction form
    68,757.70/103,138.98 = 22,004.50/x
  3. Step 3: Cross multiply
    68,757.70x = 103,138.98 × 22,004.50
  4. Step 4: Simplify right side
    68,757.70x = 2,269,521,685.41
  5. Step 5: Solve for x
    x = 2,269,521,685.41/68,757.70
  6. Step 6: Final answer
    x = 33,007.53

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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.