Home / 54,135.40-81,208.86-17,190.76

Finding the Fourth Proportional to 54,135.40, 81,208.86 and 17,190.76

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Solution

The fourth proportional to 54,135.40, 81,208.86 and 17,190.76 is: 25,787.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,135.40 : 81,208.86 = 17,190.76 : x
  2. Step 2: Convert to fraction form
    54,135.40/81,208.86 = 17,190.76/x
  3. Step 3: Cross multiply
    54,135.40x = 81,208.86 × 17,190.76
  4. Step 4: Simplify right side
    54,135.40x = 1,396,042,022.13
  5. Step 5: Solve for x
    x = 1,396,042,022.13/54,135.40
  6. Step 6: Final answer
    x = 25,787.97

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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.