Home / 89,778.78-123,883.83-49,489.38

Finding the Fourth Proportional to 89,778.78, 123,883.83 and 49,489.38

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Solution

The fourth proportional to 89,778.78, 123,883.83 and 49,489.38 is: 68,289.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,778.78 : 123,883.83 = 49,489.38 : x
  2. Step 2: Convert to fraction form
    89,778.78/123,883.83 = 49,489.38/x
  3. Step 3: Cross multiply
    89,778.78x = 123,883.83 × 49,489.38
  4. Step 4: Simplify right side
    89,778.78x = 6,130,933,938.73
  5. Step 5: Solve for x
    x = 6,130,933,938.73/89,778.78
  6. Step 6: Final answer
    x = 68,289.34

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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.