Home / 81,334.80-121,998.60-22,170.47

Finding the Fourth Proportional to 81,334.80, 121,998.60 and 22,170.47

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Solution

The fourth proportional to 81,334.80, 121,998.60 and 22,170.47 is: 33,254.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,334.80 : 121,998.60 = 22,170.47 : x
  2. Step 2: Convert to fraction form
    81,334.80/121,998.60 = 22,170.47/x
  3. Step 3: Cross multiply
    81,334.80x = 121,998.60 × 22,170.47
  4. Step 4: Simplify right side
    81,334.80x = 2,704,765,691.35
  5. Step 5: Solve for x
    x = 2,704,765,691.35/81,334.80
  6. Step 6: Final answer
    x = 33,254.72

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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.