Home / 80,418.08-120,436.44-63,724.43

Finding the Fourth Proportional to 80,418.08, 120,436.44 and 63,724.43

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Solution

The fourth proportional to 80,418.08, 120,436.44 and 63,724.43 is: 95,435.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,418.08 : 120,436.44 = 63,724.43 : x
  2. Step 2: Convert to fraction form
    80,418.08/120,436.44 = 63,724.43/x
  3. Step 3: Cross multiply
    80,418.08x = 120,436.44 × 63,724.43
  4. Step 4: Simplify right side
    80,418.08x = 7,674,743,552.35
  5. Step 5: Solve for x
    x = 7,674,743,552.35/80,418.08
  6. Step 6: Final answer
    x = 95,435.55

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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.