Home / 80,755.53-121,182.31-30,191.37

Finding the Fourth Proportional to 80,755.53, 121,182.31 and 30,191.37

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Solution

The fourth proportional to 80,755.53, 121,182.31 and 30,191.37 is: 45,305.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,755.53 : 121,182.31 = 30,191.37 : x
  2. Step 2: Convert to fraction form
    80,755.53/121,182.31 = 30,191.37/x
  3. Step 3: Cross multiply
    80,755.53x = 121,182.31 × 30,191.37
  4. Step 4: Simplify right side
    80,755.53x = 3,658,659,958.66
  5. Step 5: Solve for x
    x = 3,658,659,958.66/80,755.53
  6. Step 6: Final answer
    x = 45,305.38

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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.