Home / 80,439.40-120,716.70-33,725.80

Finding the Fourth Proportional to 80,439.40, 120,716.70 and 33,725.80

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Solution

The fourth proportional to 80,439.40, 120,716.70 and 33,725.80 is: 50,612.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,439.40 : 120,716.70 = 33,725.80 : x
  2. Step 2: Convert to fraction form
    80,439.40/120,716.70 = 33,725.80/x
  3. Step 3: Cross multiply
    80,439.40x = 120,716.70 × 33,725.80
  4. Step 4: Simplify right side
    80,439.40x = 4,071,267,280.86
  5. Step 5: Solve for x
    x = 4,071,267,280.86/80,439.40
  6. Step 6: Final answer
    x = 50,612.85

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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.