Home / 54,511.92-81,777.60-21,250.08

Finding the Fourth Proportional to 54,511.92, 81,777.60 and 21,250.08

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Solution

The fourth proportional to 54,511.92, 81,777.60 and 21,250.08 is: 31,878.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,511.92 : 81,777.60 = 21,250.08 : x
  2. Step 2: Convert to fraction form
    54,511.92/81,777.60 = 21,250.08/x
  3. Step 3: Cross multiply
    54,511.92x = 81,777.60 × 21,250.08
  4. Step 4: Simplify right side
    54,511.92x = 1,737,780,542.21
  5. Step 5: Solve for x
    x = 1,737,780,542.21/54,511.92
  6. Step 6: Final answer
    x = 31,878.91

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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.