Home / 89,679.12-123,757.98-49,394.28

Finding the Fourth Proportional to 89,679.12, 123,757.98 and 49,394.28

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Solution

The fourth proportional to 89,679.12, 123,757.98 and 49,394.28 is: 68,164.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,679.12 : 123,757.98 = 49,394.28 : x
  2. Step 2: Convert to fraction form
    89,679.12/123,757.98 = 49,394.28/x
  3. Step 3: Cross multiply
    89,679.12x = 123,757.98 × 49,394.28
  4. Step 4: Simplify right side
    89,679.12x = 6,112,936,316.35
  5. Step 5: Solve for x
    x = 6,112,936,316.35/89,679.12
  6. Step 6: Final answer
    x = 68,164.54

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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.