Home / 89,778.16-123,888.30-49,489.84

Finding the Fourth Proportional to 89,778.16, 123,888.30 and 49,489.84

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Solution

The fourth proportional to 89,778.16, 123,888.30 and 49,489.84 is: 68,292.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,778.16 : 123,888.30 = 49,489.84 : x
  2. Step 2: Convert to fraction form
    89,778.16/123,888.30 = 49,489.84/x
  3. Step 3: Cross multiply
    89,778.16x = 123,888.30 × 49,489.84
  4. Step 4: Simplify right side
    89,778.16x = 6,131,212,144.87
  5. Step 5: Solve for x
    x = 6,131,212,144.87/89,778.16
  6. Step 6: Final answer
    x = 68,292.91

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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.