Home / 54,102.87-81,154.26-20,838.60

Finding the Fourth Proportional to 54,102.87, 81,154.26 and 20,838.60

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Solution

The fourth proportional to 54,102.87, 81,154.26 and 20,838.60 is: 31,257.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,102.87 : 81,154.26 = 20,838.60 : x
  2. Step 2: Convert to fraction form
    54,102.87/81,154.26 = 20,838.60/x
  3. Step 3: Cross multiply
    54,102.87x = 81,154.26 × 20,838.60
  4. Step 4: Simplify right side
    54,102.87x = 1,691,141,162.44
  5. Step 5: Solve for x
    x = 1,691,141,162.44/54,102.87
  6. Step 6: Final answer
    x = 31,257.88

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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.