Home / 80,230.23-120,279.74-30,281.88

Finding the Fourth Proportional to 80,230.23, 120,279.74 and 30,281.88

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Solution

The fourth proportional to 80,230.23, 120,279.74 and 30,281.88 is: 45,398.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,230.23 : 120,279.74 = 30,281.88 : x
  2. Step 2: Convert to fraction form
    80,230.23/120,279.74 = 30,281.88/x
  3. Step 3: Cross multiply
    80,230.23x = 120,279.74 × 30,281.88
  4. Step 4: Simplify right side
    80,230.23x = 3,642,296,952.75
  5. Step 5: Solve for x
    x = 3,642,296,952.75/80,230.23
  6. Step 6: Final answer
    x = 45,398.06

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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.