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Finding the Fourth Proportional to 83,679.65, 115,439.25 and 49,668.83

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Solution

The fourth proportional to 83,679.65, 115,439.25 and 49,668.83 is: 68,520.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,679.65 : 115,439.25 = 49,668.83 : x
  2. Step 2: Convert to fraction form
    83,679.65/115,439.25 = 49,668.83/x
  3. Step 3: Cross multiply
    83,679.65x = 115,439.25 × 49,668.83
  4. Step 4: Simplify right side
    83,679.65x = 5,733,731,906.38
  5. Step 5: Solve for x
    x = 5,733,731,906.38/83,679.65
  6. Step 6: Final answer
    x = 68,520.03

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1.5x scale

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.