Home / 80,723.82-121,084.51-36,319.22

Finding the Fourth Proportional to 80,723.82, 121,084.51 and 36,319.22

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Solution

The fourth proportional to 80,723.82, 121,084.51 and 36,319.22 is: 54,478.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,723.82 : 121,084.51 = 36,319.22 : x
  2. Step 2: Convert to fraction form
    80,723.82/121,084.51 = 36,319.22/x
  3. Step 3: Cross multiply
    80,723.82x = 121,084.51 × 36,319.22
  4. Step 4: Simplify right side
    80,723.82x = 4,397,694,957.28
  5. Step 5: Solve for x
    x = 4,397,694,957.28/80,723.82
  6. Step 6: Final answer
    x = 54,478.28

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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.