Home / 54,187.88-81,284.38-19,131.24

Finding the Fourth Proportional to 54,187.88, 81,284.38 and 19,131.24

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Solution

The fourth proportional to 54,187.88, 81,284.38 and 19,131.24 is: 28,697.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,187.88 : 81,284.38 = 19,131.24 : x
  2. Step 2: Convert to fraction form
    54,187.88/81,284.38 = 19,131.24/x
  3. Step 3: Cross multiply
    54,187.88x = 81,284.38 × 19,131.24
  4. Step 4: Simplify right side
    54,187.88x = 1,555,070,982.03
  5. Step 5: Solve for x
    x = 1,555,070,982.03/54,187.88
  6. Step 6: Final answer
    x = 28,697.76

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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.