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Finding the Fourth Proportional to 79,951.20, 120,003.60 and 40,552.80

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Solution

The fourth proportional to 79,951.20, 120,003.60 and 40,552.80 is: 60,868.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,951.20 : 120,003.60 = 40,552.80 : x
  2. Step 2: Convert to fraction form
    79,951.20/120,003.60 = 40,552.80/x
  3. Step 3: Cross multiply
    79,951.20x = 120,003.60 × 40,552.80
  4. Step 4: Simplify right side
    79,951.20x = 4,866,481,990.08
  5. Step 5: Solve for x
    x = 4,866,481,990.08/79,951.20
  6. Step 6: Final answer
    x = 60,868.15

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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.