Home / 54,455.28-81,644.52-21,147.60

Finding the Fourth Proportional to 54,455.28, 81,644.52 and 21,147.60

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Solution

The fourth proportional to 54,455.28, 81,644.52 and 21,147.60 is: 31,706.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,455.28 : 81,644.52 = 21,147.60 : x
  2. Step 2: Convert to fraction form
    54,455.28/81,644.52 = 21,147.60/x
  3. Step 3: Cross multiply
    54,455.28x = 81,644.52 × 21,147.60
  4. Step 4: Simplify right side
    54,455.28x = 1,726,585,651.15
  5. Step 5: Solve for x
    x = 1,726,585,651.15/54,455.28
  6. Step 6: Final answer
    x = 31,706.49

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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.