Home / 80,366.96-120,433.80-45,231.60

Finding the Fourth Proportional to 80,366.96, 120,433.80 and 45,231.60

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Solution

The fourth proportional to 80,366.96, 120,433.80 and 45,231.60 is: 67,781.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,366.96 : 120,433.80 = 45,231.60 : x
  2. Step 2: Convert to fraction form
    80,366.96/120,433.80 = 45,231.60/x
  3. Step 3: Cross multiply
    80,366.96x = 120,433.80 × 45,231.60
  4. Step 4: Simplify right side
    80,366.96x = 5,447,413,468.08
  5. Step 5: Solve for x
    x = 5,447,413,468.08/80,366.96
  6. Step 6: Final answer
    x = 67,781.75

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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.