Home / 80,486.40-120,729.60-33,772.80

Finding the Fourth Proportional to 80,486.40, 120,729.60 and 33,772.80

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Solution

The fourth proportional to 80,486.40, 120,729.60 and 33,772.80 is: 50,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,486.40 : 120,729.60 = 33,772.80 : x
  2. Step 2: Convert to fraction form
    80,486.40/120,729.60 = 33,772.80/x
  3. Step 3: Cross multiply
    80,486.40x = 120,729.60 × 33,772.80
  4. Step 4: Simplify right side
    80,486.40x = 4,077,376,634.88
  5. Step 5: Solve for x
    x = 4,077,376,634.88/80,486.40
  6. Step 6: Final answer
    x = 50,659.20

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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.