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Finding the Fourth Proportional to 72,537.09, 108,793.09 and 19,229.41

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Solution

The fourth proportional to 72,537.09, 108,793.09 and 19,229.41 is: 28,840.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,537.09 : 108,793.09 = 19,229.41 : x
  2. Step 2: Convert to fraction form
    72,537.09/108,793.09 = 19,229.41/x
  3. Step 3: Cross multiply
    72,537.09x = 108,793.09 × 19,229.41
  4. Step 4: Simplify right side
    72,537.09x = 2,092,027,092.81
  5. Step 5: Solve for x
    x = 2,092,027,092.81/72,537.09
  6. Step 6: Final answer
    x = 28,840.79

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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.