Home / 80,103.35-120,084.32-30,218.48

Finding the Fourth Proportional to 80,103.35, 120,084.32 and 30,218.48

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Solution

The fourth proportional to 80,103.35, 120,084.32 and 30,218.48 is: 45,301.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,103.35 : 120,084.32 = 30,218.48 : x
  2. Step 2: Convert to fraction form
    80,103.35/120,084.32 = 30,218.48/x
  3. Step 3: Cross multiply
    80,103.35x = 120,084.32 × 30,218.48
  4. Step 4: Simplify right side
    80,103.35x = 3,628,765,659.02
  5. Step 5: Solve for x
    x = 3,628,765,659.02/80,103.35
  6. Step 6: Final answer
    x = 45,301.05

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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.