Home / 54,340.13-81,511.20-16,899.90

Finding the Fourth Proportional to 54,340.13, 81,511.20 and 16,899.90

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Solution

The fourth proportional to 54,340.13, 81,511.20 and 16,899.90 is: 25,350.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,340.13 : 81,511.20 = 16,899.90 : x
  2. Step 2: Convert to fraction form
    54,340.13/81,511.20 = 16,899.90/x
  3. Step 3: Cross multiply
    54,340.13x = 81,511.20 × 16,899.90
  4. Step 4: Simplify right side
    54,340.13x = 1,377,531,128.88
  5. Step 5: Solve for x
    x = 1,377,531,128.88/54,340.13
  6. Step 6: Final answer
    x = 25,350.16

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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.