Home / 80,819.85-121,104.03-30,872.70

Finding the Fourth Proportional to 80,819.85, 121,104.03 and 30,872.70

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Solution

The fourth proportional to 80,819.85, 121,104.03 and 30,872.70 is: 46,261.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,819.85 : 121,104.03 = 30,872.70 : x
  2. Step 2: Convert to fraction form
    80,819.85/121,104.03 = 30,872.70/x
  3. Step 3: Cross multiply
    80,819.85x = 121,104.03 × 30,872.70
  4. Step 4: Simplify right side
    80,819.85x = 3,738,808,386.98
  5. Step 5: Solve for x
    x = 3,738,808,386.98/80,819.85
  6. Step 6: Final answer
    x = 46,261.02

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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.