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Finding the Fourth Proportional to 68,872.82, 103,220.42 and 33,325.78

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Solution

The fourth proportional to 68,872.82, 103,220.42 and 33,325.78 is: 49,945.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,872.82 : 103,220.42 = 33,325.78 : x
  2. Step 2: Convert to fraction form
    68,872.82/103,220.42 = 33,325.78/x
  3. Step 3: Cross multiply
    68,872.82x = 103,220.42 × 33,325.78
  4. Step 4: Simplify right side
    68,872.82x = 3,439,900,941.31
  5. Step 5: Solve for x
    x = 3,439,900,941.31/68,872.82
  6. Step 6: Final answer
    x = 49,945.70

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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.