Home / 54,517.29-81,742.44-21,198.51

Finding the Fourth Proportional to 54,517.29, 81,742.44 and 21,198.51

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Solution

The fourth proportional to 54,517.29, 81,742.44 and 21,198.51 is: 31,784.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,517.29 : 81,742.44 = 21,198.51 : x
  2. Step 2: Convert to fraction form
    54,517.29/81,742.44 = 21,198.51/x
  3. Step 3: Cross multiply
    54,517.29x = 81,742.44 × 21,198.51
  4. Step 4: Simplify right side
    54,517.29x = 1,732,818,243.81
  5. Step 5: Solve for x
    x = 1,732,818,243.81/54,517.29
  6. Step 6: Final answer
    x = 31,784.75

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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.