Home / 81,958.16-113,119.11-51,723.18

Finding the Fourth Proportional to 81,958.16, 113,119.11 and 51,723.18

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Solution

The fourth proportional to 81,958.16, 113,119.11 and 51,723.18 is: 71,388.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,958.16 : 113,119.11 = 51,723.18 : x
  2. Step 2: Convert to fraction form
    81,958.16/113,119.11 = 51,723.18/x
  3. Step 3: Cross multiply
    81,958.16x = 113,119.11 × 51,723.18
  4. Step 4: Simplify right side
    81,958.16x = 5,850,880,087.97
  5. Step 5: Solve for x
    x = 5,850,880,087.97/81,958.16
  6. Step 6: Final answer
    x = 71,388.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.