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Finding the Fourth Proportional to 54,229.63, 81,367.71 and 20,973.03

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Solution

The fourth proportional to 54,229.63, 81,367.71 and 20,973.03 is: 31,468.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,229.63 : 81,367.71 = 20,973.03 : x
  2. Step 2: Convert to fraction form
    54,229.63/81,367.71 = 20,973.03/x
  3. Step 3: Cross multiply
    54,229.63x = 81,367.71 × 20,973.03
  4. Step 4: Simplify right side
    54,229.63x = 1,706,527,216.04
  5. Step 5: Solve for x
    x = 1,706,527,216.04/54,229.63
  6. Step 6: Final answer
    x = 31,468.54

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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.