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Finding the Fourth Proportional to 80,613.39, 120,870.87 and 33,213.81

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Solution

The fourth proportional to 80,613.39, 120,870.87 and 33,213.81 is: 49,800.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,613.39 : 120,870.87 = 33,213.81 : x
  2. Step 2: Convert to fraction form
    80,613.39/120,870.87 = 33,213.81/x
  3. Step 3: Cross multiply
    80,613.39x = 120,870.87 × 33,213.81
  4. Step 4: Simplify right side
    80,613.39x = 4,014,582,110.71
  5. Step 5: Solve for x
    x = 4,014,582,110.71/80,613.39
  6. Step 6: Final answer
    x = 49,800.44

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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.