Home / 89,481.38-123,382.85-57,173.31

Finding the Fourth Proportional to 89,481.38, 123,382.85 and 57,173.31

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Solution

The fourth proportional to 89,481.38, 123,382.85 and 57,173.31 is: 78,834.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,481.38 : 123,382.85 = 57,173.31 : x
  2. Step 2: Convert to fraction form
    89,481.38/123,382.85 = 57,173.31/x
  3. Step 3: Cross multiply
    89,481.38x = 123,382.85 × 57,173.31
  4. Step 4: Simplify right side
    89,481.38x = 7,054,205,645.87
  5. Step 5: Solve for x
    x = 7,054,205,645.87/89,481.38
  6. Step 6: Final answer
    x = 78,834.35

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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.