Home / 54,120-81,181.22-18,581.25

Finding the Fourth Proportional to 54,120, 81,181.22 and 18,581.25

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Solution

The fourth proportional to 54,120, 81,181.22 and 18,581.25 is: 27,872.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,120 : 81,181.22 = 18,581.25 : x
  2. Step 2: Convert to fraction form
    54,120/81,181.22 = 18,581.25/x
  3. Step 3: Cross multiply
    54,120x = 81,181.22 × 18,581.25
  4. Step 4: Simplify right side
    54,120x = 1,508,448,451.22
  5. Step 5: Solve for x
    x = 1,508,448,451.22/54,120
  6. Step 6: Final answer
    x = 27,872.29

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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.