Home / 80,290.20-120,310.21-30,343.04

Finding the Fourth Proportional to 80,290.20, 120,310.21 and 30,343.04

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Solution

The fourth proportional to 80,290.20, 120,310.21 and 30,343.04 is: 45,467.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,290.20 : 120,310.21 = 30,343.04 : x
  2. Step 2: Convert to fraction form
    80,290.20/120,310.21 = 30,343.04/x
  3. Step 3: Cross multiply
    80,290.20x = 120,310.21 × 30,343.04
  4. Step 4: Simplify right side
    80,290.20x = 3,650,577,401.98
  5. Step 5: Solve for x
    x = 3,650,577,401.98/80,290.20
  6. Step 6: Final answer
    x = 45,467.28

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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.