Home / 276,921.92-415,382.85-66,559.86

Finding the Fourth Proportional to 276,921.92, 415,382.85 and 66,559.86

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Solution

The fourth proportional to 276,921.92, 415,382.85 and 66,559.86 is: 99,839.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,921.92 : 415,382.85 = 66,559.86 : x
  2. Step 2: Convert to fraction form
    276,921.92/415,382.85 = 66,559.86/x
  3. Step 3: Cross multiply
    276,921.92x = 415,382.85 × 66,559.86
  4. Step 4: Simplify right side
    276,921.92x = 27,647,824,342.40
  5. Step 5: Solve for x
    x = 27,647,824,342.40/276,921.92
  6. Step 6: Final answer
    x = 99,839.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.