Home / 80,426.52-120,621.40-30,512.16

Finding the Fourth Proportional to 80,426.52, 120,621.40 and 30,512.16

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Solution

The fourth proportional to 80,426.52, 120,621.40 and 30,512.16 is: 45,761.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,426.52 : 120,621.40 = 30,512.16 : x
  2. Step 2: Convert to fraction form
    80,426.52/120,621.40 = 30,512.16/x
  3. Step 3: Cross multiply
    80,426.52x = 120,621.40 × 30,512.16
  4. Step 4: Simplify right side
    80,426.52x = 3,680,419,456.22
  5. Step 5: Solve for x
    x = 3,680,419,456.22/80,426.52
  6. Step 6: Final answer
    x = 45,761.27

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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.