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Finding the Fourth Proportional to 72,252.90, 108,383.63 and 27,879.89

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Solution

The fourth proportional to 72,252.90, 108,383.63 and 27,879.89 is: 41,821.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,252.90 : 108,383.63 = 27,879.89 : x
  2. Step 2: Convert to fraction form
    72,252.90/108,383.63 = 27,879.89/x
  3. Step 3: Cross multiply
    72,252.90x = 108,383.63 × 27,879.89
  4. Step 4: Simplify right side
    72,252.90x = 3,021,723,000.88
  5. Step 5: Solve for x
    x = 3,021,723,000.88/72,252.90
  6. Step 6: Final answer
    x = 41,821.48

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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.