Home / 80,039.48-120,170.39-40,624.88

Finding the Fourth Proportional to 80,039.48, 120,170.39 and 40,624.88

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Solution

The fourth proportional to 80,039.48, 120,170.39 and 40,624.88 is: 60,993.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,039.48 : 120,170.39 = 40,624.88 : x
  2. Step 2: Convert to fraction form
    80,039.48/120,170.39 = 40,624.88/x
  3. Step 3: Cross multiply
    80,039.48x = 120,170.39 × 40,624.88
  4. Step 4: Simplify right side
    80,039.48x = 4,881,906,869.33
  5. Step 5: Solve for x
    x = 4,881,906,869.33/80,039.48
  6. Step 6: Final answer
    x = 60,993.74

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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.