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Finding the Fourth Proportional to 80,084.38, 120,118.37 and 20,912.37

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Solution

The fourth proportional to 80,084.38, 120,118.37 and 20,912.37 is: 31,366.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,084.38 : 120,118.37 = 20,912.37 : x
  2. Step 2: Convert to fraction form
    80,084.38/120,118.37 = 20,912.37/x
  3. Step 3: Cross multiply
    80,084.38x = 120,118.37 × 20,912.37
  4. Step 4: Simplify right side
    80,084.38x = 2,511,959,797.24
  5. Step 5: Solve for x
    x = 2,511,959,797.24/80,084.38
  6. Step 6: Final answer
    x = 31,366.41

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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.