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Finding the Fourth Proportional to 80,425.66, 120,619.05 and 33,713.50

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Solution

The fourth proportional to 80,425.66, 120,619.05 and 33,713.50 is: 50,562.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,425.66 : 120,619.05 = 33,713.50 : x
  2. Step 2: Convert to fraction form
    80,425.66/120,619.05 = 33,713.50/x
  3. Step 3: Cross multiply
    80,425.66x = 120,619.05 × 33,713.50
  4. Step 4: Simplify right side
    80,425.66x = 4,066,490,342.18
  5. Step 5: Solve for x
    x = 4,066,490,342.18/80,425.66
  6. Step 6: Final answer
    x = 50,562.10

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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.