Home / 81,245.21-121,867.46-22,080.71

Finding the Fourth Proportional to 81,245.21, 121,867.46 and 22,080.71

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Solution

The fourth proportional to 81,245.21, 121,867.46 and 22,080.71 is: 33,120.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,245.21 : 121,867.46 = 22,080.71 : x
  2. Step 2: Convert to fraction form
    81,245.21/121,867.46 = 22,080.71/x
  3. Step 3: Cross multiply
    81,245.21x = 121,867.46 × 22,080.71
  4. Step 4: Simplify right side
    81,245.21x = 2,690,919,322.96
  5. Step 5: Solve for x
    x = 2,690,919,322.96/81,245.21
  6. Step 6: Final answer
    x = 33,120.96

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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.