Home / 54,206.20-81,262.56-20,949.60

Finding the Fourth Proportional to 54,206.20, 81,262.56 and 20,949.60

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Solution

The fourth proportional to 54,206.20, 81,262.56 and 20,949.60 is: 31,406.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,206.20 : 81,262.56 = 20,949.60 : x
  2. Step 2: Convert to fraction form
    54,206.20/81,262.56 = 20,949.60/x
  3. Step 3: Cross multiply
    54,206.20x = 81,262.56 × 20,949.60
  4. Step 4: Simplify right side
    54,206.20x = 1,702,418,126.98
  5. Step 5: Solve for x
    x = 1,702,418,126.98/54,206.20
  6. Step 6: Final answer
    x = 31,406.34

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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.