Home / 89,789.45-123,910.31-49,504.78

Finding the Fourth Proportional to 89,789.45, 123,910.31 and 49,504.78

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Solution

The fourth proportional to 89,789.45, 123,910.31 and 49,504.78 is: 68,317.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,789.45 : 123,910.31 = 49,504.78 : x
  2. Step 2: Convert to fraction form
    89,789.45/123,910.31 = 49,504.78/x
  3. Step 3: Cross multiply
    89,789.45x = 123,910.31 × 49,504.78
  4. Step 4: Simplify right side
    89,789.45x = 6,134,152,636.28
  5. Step 5: Solve for x
    x = 6,134,152,636.28/89,789.45
  6. Step 6: Final answer
    x = 68,317.08

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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.