Home / 54,478.14-81,722.52-21,200.91

Finding the Fourth Proportional to 54,478.14, 81,722.52 and 21,200.91

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Solution

The fourth proportional to 54,478.14, 81,722.52 and 21,200.91 is: 31,803.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,478.14 : 81,722.52 = 21,200.91 : x
  2. Step 2: Convert to fraction form
    54,478.14/81,722.52 = 21,200.91/x
  3. Step 3: Cross multiply
    54,478.14x = 81,722.52 × 21,200.91
  4. Step 4: Simplify right side
    54,478.14x = 1,732,591,791.49
  5. Step 5: Solve for x
    x = 1,732,591,791.49/54,478.14
  6. Step 6: Final answer
    x = 31,803.43

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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.