Home / 54,434.80-81,631.20-21,150.48

Finding the Fourth Proportional to 54,434.80, 81,631.20 and 21,150.48

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Solution

The fourth proportional to 54,434.80, 81,631.20 and 21,150.48 is: 31,717.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,434.80 : 81,631.20 = 21,150.48 : x
  2. Step 2: Convert to fraction form
    54,434.80/81,631.20 = 21,150.48/x
  3. Step 3: Cross multiply
    54,434.80x = 81,631.20 × 21,150.48
  4. Step 4: Simplify right side
    54,434.80x = 1,726,539,142.29
  5. Step 5: Solve for x
    x = 1,726,539,142.29/54,434.80
  6. Step 6: Final answer
    x = 31,717.56

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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.