Home / 54,234.20-81,363.45-20,951.30

Finding the Fourth Proportional to 54,234.20, 81,363.45 and 20,951.30

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Solution

The fourth proportional to 54,234.20, 81,363.45 and 20,951.30 is: 31,431.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,234.20 : 81,363.45 = 20,951.30 : x
  2. Step 2: Convert to fraction form
    54,234.20/81,363.45 = 20,951.30/x
  3. Step 3: Cross multiply
    54,234.20x = 81,363.45 × 20,951.30
  4. Step 4: Simplify right side
    54,234.20x = 1,704,670,049.99
  5. Step 5: Solve for x
    x = 1,704,670,049.99/54,234.20
  6. Step 6: Final answer
    x = 31,431.64

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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.