Home / 54,231.87-81,340.11-20,967.60

Finding the Fourth Proportional to 54,231.87, 81,340.11 and 20,967.60

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Solution

The fourth proportional to 54,231.87, 81,340.11 and 20,967.60 is: 31,448.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,231.87 : 81,340.11 = 20,967.60 : x
  2. Step 2: Convert to fraction form
    54,231.87/81,340.11 = 20,967.60/x
  3. Step 3: Cross multiply
    54,231.87x = 81,340.11 × 20,967.60
  4. Step 4: Simplify right side
    54,231.87x = 1,705,506,890.44
  5. Step 5: Solve for x
    x = 1,705,506,890.44/54,231.87
  6. Step 6: Final answer
    x = 31,448.42

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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.