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Finding the Fourth Proportional to 72,979.11, 100,708.11 and 41,150.97

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Solution

The fourth proportional to 72,979.11, 100,708.11 and 41,150.97 is: 56,786.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,979.11 : 100,708.11 = 41,150.97 : x
  2. Step 2: Convert to fraction form
    72,979.11/100,708.11 = 41,150.97/x
  3. Step 3: Cross multiply
    72,979.11x = 100,708.11 × 41,150.97
  4. Step 4: Simplify right side
    72,979.11x = 4,144,236,413.37
  5. Step 5: Solve for x
    x = 4,144,236,413.37/72,979.11
  6. Step 6: Final answer
    x = 56,786.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.