Home / 80,824.20-121,236.30-52,830.60

Finding the Fourth Proportional to 80,824.20, 121,236.30 and 52,830.60

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Solution

The fourth proportional to 80,824.20, 121,236.30 and 52,830.60 is: 79,245.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,824.20 : 121,236.30 = 52,830.60 : x
  2. Step 2: Convert to fraction form
    80,824.20/121,236.30 = 52,830.60/x
  3. Step 3: Cross multiply
    80,824.20x = 121,236.30 × 52,830.60
  4. Step 4: Simplify right side
    80,824.20x = 6,404,986,470.78
  5. Step 5: Solve for x
    x = 6,404,986,470.78/80,824.20
  6. Step 6: Final answer
    x = 79,245.90

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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.