Home / 80,613.38-120,919.93-21,449.07

Finding the Fourth Proportional to 80,613.38, 120,919.93 and 21,449.07

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Solution

The fourth proportional to 80,613.38, 120,919.93 and 21,449.07 is: 32,173.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,613.38 : 120,919.93 = 21,449.07 : x
  2. Step 2: Convert to fraction form
    80,613.38/120,919.93 = 21,449.07/x
  3. Step 3: Cross multiply
    80,613.38x = 120,919.93 × 21,449.07
  4. Step 4: Simplify right side
    80,613.38x = 2,593,619,989.34
  5. Step 5: Solve for x
    x = 2,593,619,989.34/80,613.38
  6. Step 6: Final answer
    x = 32,173.57

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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.