Home / 80,359.42-110,986.78-54,821.94

Finding the Fourth Proportional to 80,359.42, 110,986.78 and 54,821.94

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Solution

The fourth proportional to 80,359.42, 110,986.78 and 54,821.94 is: 75,716.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,359.42 : 110,986.78 = 54,821.94 : x
  2. Step 2: Convert to fraction form
    80,359.42/110,986.78 = 54,821.94/x
  3. Step 3: Cross multiply
    80,359.42x = 110,986.78 × 54,821.94
  4. Step 4: Simplify right side
    80,359.42x = 6,084,510,593.95
  5. Step 5: Solve for x
    x = 6,084,510,593.95/80,359.42
  6. Step 6: Final answer
    x = 75,716.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.