Home / 80,770.20-121,107.30-49,627.80

Finding the Fourth Proportional to 80,770.20, 121,107.30 and 49,627.80

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Solution

The fourth proportional to 80,770.20, 121,107.30 and 49,627.80 is: 74,412.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,770.20 : 121,107.30 = 49,627.80 : x
  2. Step 2: Convert to fraction form
    80,770.20/121,107.30 = 49,627.80/x
  3. Step 3: Cross multiply
    80,770.20x = 121,107.30 × 49,627.80
  4. Step 4: Simplify right side
    80,770.20x = 6,010,288,862.94
  5. Step 5: Solve for x
    x = 6,010,288,862.94/80,770.20
  6. Step 6: Final answer
    x = 74,412.21

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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.