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Finding the Fourth Proportional to 80,632.45, 120,850.26 and 45,499.51

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Solution

The fourth proportional to 80,632.45, 120,850.26 and 45,499.51 is: 68,193.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,632.45 : 120,850.26 = 45,499.51 : x
  2. Step 2: Convert to fraction form
    80,632.45/120,850.26 = 45,499.51/x
  3. Step 3: Cross multiply
    80,632.45x = 120,850.26 × 45,499.51
  4. Step 4: Simplify right side
    80,632.45x = 5,498,627,613.37
  5. Step 5: Solve for x
    x = 5,498,627,613.37/80,632.45
  6. Step 6: Final answer
    x = 68,193.73

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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.