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Finding the Fourth Proportional to 80,649.72, 120,850.02 and 43,214.76

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Solution

The fourth proportional to 80,649.72, 120,850.02 and 43,214.76 is: 64,755.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,649.72 : 120,850.02 = 43,214.76 : x
  2. Step 2: Convert to fraction form
    80,649.72/120,850.02 = 43,214.76/x
  3. Step 3: Cross multiply
    80,649.72x = 120,850.02 × 43,214.76
  4. Step 4: Simplify right side
    80,649.72x = 5,222,504,610.30
  5. Step 5: Solve for x
    x = 5,222,504,610.30/80,649.72
  6. Step 6: Final answer
    x = 64,755.40

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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.