Home / 80,286.80-120,436.04-27,695.60

Finding the Fourth Proportional to 80,286.80, 120,436.04 and 27,695.60

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Solution

The fourth proportional to 80,286.80, 120,436.04 and 27,695.60 is: 41,545.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,286.80 : 120,436.04 = 27,695.60 : x
  2. Step 2: Convert to fraction form
    80,286.80/120,436.04 = 27,695.60/x
  3. Step 3: Cross multiply
    80,286.80x = 120,436.04 × 27,695.60
  4. Step 4: Simplify right side
    80,286.80x = 3,335,548,389.42
  5. Step 5: Solve for x
    x = 3,335,548,389.42/80,286.80
  6. Step 6: Final answer
    x = 41,545.41

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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.