Home / 73,317.96-109,976.94-20,720.61

Finding the Fourth Proportional to 73,317.96, 109,976.94 and 20,720.61

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Solution

The fourth proportional to 73,317.96, 109,976.94 and 20,720.61 is: 31,080.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,317.96 : 109,976.94 = 20,720.61 : x
  2. Step 2: Convert to fraction form
    73,317.96/109,976.94 = 20,720.61/x
  3. Step 3: Cross multiply
    73,317.96x = 109,976.94 × 20,720.61
  4. Step 4: Simplify right side
    73,317.96x = 2,278,789,282.73
  5. Step 5: Solve for x
    x = 2,278,789,282.73/73,317.96
  6. Step 6: Final answer
    x = 31,080.92

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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.