Home / 54,921.12-82,380.91-21,641.47

Finding the Fourth Proportional to 54,921.12, 82,380.91 and 21,641.47

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Solution

The fourth proportional to 54,921.12, 82,380.91 and 21,641.47 is: 32,461.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,921.12 : 82,380.91 = 21,641.47 : x
  2. Step 2: Convert to fraction form
    54,921.12/82,380.91 = 21,641.47/x
  3. Step 3: Cross multiply
    54,921.12x = 82,380.91 × 21,641.47
  4. Step 4: Simplify right side
    54,921.12x = 1,782,844,297.12
  5. Step 5: Solve for x
    x = 1,782,844,297.12/54,921.12
  6. Step 6: Final answer
    x = 32,461.91

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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.