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Finding the Fourth Proportional to 72,512.85, 108,772.22 and 34,542.60

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Solution

The fourth proportional to 72,512.85, 108,772.22 and 34,542.60 is: 51,815.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,512.85 : 108,772.22 = 34,542.60 : x
  2. Step 2: Convert to fraction form
    72,512.85/108,772.22 = 34,542.60/x
  3. Step 3: Cross multiply
    72,512.85x = 108,772.22 × 34,542.60
  4. Step 4: Simplify right side
    72,512.85x = 3,757,275,113.86
  5. Step 5: Solve for x
    x = 3,757,275,113.86/72,512.85
  6. Step 6: Final answer
    x = 51,815.30

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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.