Home / 80,145.81-120,229.65-33,387.75

Finding the Fourth Proportional to 80,145.81, 120,229.65 and 33,387.75

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Solution

The fourth proportional to 80,145.81, 120,229.65 and 33,387.75 is: 50,086.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,145.81 : 120,229.65 = 33,387.75 : x
  2. Step 2: Convert to fraction form
    80,145.81/120,229.65 = 33,387.75/x
  3. Step 3: Cross multiply
    80,145.81x = 120,229.65 × 33,387.75
  4. Step 4: Simplify right side
    80,145.81x = 4,014,197,496.79
  5. Step 5: Solve for x
    x = 4,014,197,496.79/80,145.81
  6. Step 6: Final answer
    x = 50,086.18

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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.