Home / 80,789.11-121,183.72-21,623.22

Finding the Fourth Proportional to 80,789.11, 121,183.72 and 21,623.22

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Solution

The fourth proportional to 80,789.11, 121,183.72 and 21,623.22 is: 32,434.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,789.11 : 121,183.72 = 21,623.22 : x
  2. Step 2: Convert to fraction form
    80,789.11/121,183.72 = 21,623.22/x
  3. Step 3: Cross multiply
    80,789.11x = 121,183.72 × 21,623.22
  4. Step 4: Simplify right side
    80,789.11x = 2,620,382,183.92
  5. Step 5: Solve for x
    x = 2,620,382,183.92/80,789.11
  6. Step 6: Final answer
    x = 32,434.85

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1.5x scale

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.