Home / 89,764.75-123,873.70-49,478.65

Finding the Fourth Proportional to 89,764.75, 123,873.70 and 49,478.65

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Solution

The fourth proportional to 89,764.75, 123,873.70 and 49,478.65 is: 68,279.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,764.75 : 123,873.70 = 49,478.65 : x
  2. Step 2: Convert to fraction form
    89,764.75/123,873.70 = 49,478.65/x
  3. Step 3: Cross multiply
    89,764.75x = 123,873.70 × 49,478.65
  4. Step 4: Simplify right side
    89,764.75x = 6,129,103,446.51
  5. Step 5: Solve for x
    x = 6,129,103,446.51/89,764.75
  6. Step 6: Final answer
    x = 68,279.62

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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.