Home / 54,135.18-81,181.26-20,836.80

Finding the Fourth Proportional to 54,135.18, 81,181.26 and 20,836.80

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Solution

The fourth proportional to 54,135.18, 81,181.26 and 20,836.80 is: 31,246.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,135.18 : 81,181.26 = 20,836.80 : x
  2. Step 2: Convert to fraction form
    54,135.18/81,181.26 = 20,836.80/x
  3. Step 3: Cross multiply
    54,135.18x = 81,181.26 × 20,836.80
  4. Step 4: Simplify right side
    54,135.18x = 1,691,557,678.37
  5. Step 5: Solve for x
    x = 1,691,557,678.37/54,135.18
  6. Step 6: Final answer
    x = 31,246.92

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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.