Home / 80,319.22-120,589.18-40,902.82

Finding the Fourth Proportional to 80,319.22, 120,589.18 and 40,902.82

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Solution

The fourth proportional to 80,319.22, 120,589.18 and 40,902.82 is: 61,410.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,319.22 : 120,589.18 = 40,902.82 : x
  2. Step 2: Convert to fraction form
    80,319.22/120,589.18 = 40,902.82/x
  3. Step 3: Cross multiply
    80,319.22x = 120,589.18 × 40,902.82
  4. Step 4: Simplify right side
    80,319.22x = 4,932,437,523.49
  5. Step 5: Solve for x
    x = 4,932,437,523.49/80,319.22
  6. Step 6: Final answer
    x = 61,410.43

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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.