Home / 68,787.34-103,174.10-18,872.46

Finding the Fourth Proportional to 68,787.34, 103,174.10 and 18,872.46

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Solution

The fourth proportional to 68,787.34, 103,174.10 and 18,872.46 is: 28,306.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,787.34 : 103,174.10 = 18,872.46 : x
  2. Step 2: Convert to fraction form
    68,787.34/103,174.10 = 18,872.46/x
  3. Step 3: Cross multiply
    68,787.34x = 103,174.10 × 18,872.46
  4. Step 4: Simplify right side
    68,787.34x = 1,947,149,157.85
  5. Step 5: Solve for x
    x = 1,947,149,157.85/68,787.34
  6. Step 6: Final answer
    x = 28,306.79

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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.