Home / 89,757.85-123,872.96-49,478.78

Finding the Fourth Proportional to 89,757.85, 123,872.96 and 49,478.78

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Solution

The fourth proportional to 89,757.85, 123,872.96 and 49,478.78 is: 68,284.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,757.85 : 123,872.96 = 49,478.78 : x
  2. Step 2: Convert to fraction form
    89,757.85/123,872.96 = 49,478.78/x
  3. Step 3: Cross multiply
    89,757.85x = 123,872.96 × 49,478.78
  4. Step 4: Simplify right side
    89,757.85x = 6,129,082,069.03
  5. Step 5: Solve for x
    x = 6,129,082,069.03/89,757.85
  6. Step 6: Final answer
    x = 68,284.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.