Home / 80,988.56-121,481.96-27,680.03

Finding the Fourth Proportional to 80,988.56, 121,481.96 and 27,680.03

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Solution

The fourth proportional to 80,988.56, 121,481.96 and 27,680.03 is: 41,519.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,988.56 : 121,481.96 = 27,680.03 : x
  2. Step 2: Convert to fraction form
    80,988.56/121,481.96 = 27,680.03/x
  3. Step 3: Cross multiply
    80,988.56x = 121,481.96 × 27,680.03
  4. Step 4: Simplify right side
    80,988.56x = 3,362,623,551.45
  5. Step 5: Solve for x
    x = 3,362,623,551.45/80,988.56
  6. Step 6: Final answer
    x = 41,519.74

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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.