Home / 89,329.89-123,251.19-51,081.56

Finding the Fourth Proportional to 89,329.89, 123,251.19 and 51,081.56

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Solution

The fourth proportional to 89,329.89, 123,251.19 and 51,081.56 is: 70,478.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,329.89 : 123,251.19 = 51,081.56 : x
  2. Step 2: Convert to fraction form
    89,329.89/123,251.19 = 51,081.56/x
  3. Step 3: Cross multiply
    89,329.89x = 123,251.19 × 51,081.56
  4. Step 4: Simplify right side
    89,329.89x = 6,295,862,711.44
  5. Step 5: Solve for x
    x = 6,295,862,711.44/89,329.89
  6. Step 6: Final answer
    x = 70,478.79

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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.