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Finding the Fourth Proportional to 72,352.80, 108,519.48 and 25,638.48

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Solution

The fourth proportional to 72,352.80, 108,519.48 and 25,638.48 is: 38,454.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,352.80 : 108,519.48 = 25,638.48 : x
  2. Step 2: Convert to fraction form
    72,352.80/108,519.48 = 25,638.48/x
  3. Step 3: Cross multiply
    72,352.80x = 108,519.48 × 25,638.48
  4. Step 4: Simplify right side
    72,352.80x = 2,782,274,517.59
  5. Step 5: Solve for x
    x = 2,782,274,517.59/72,352.80
  6. Step 6: Final answer
    x = 38,454.28

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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.