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Finding the Fourth Proportional to 107,939.52, 161,920.80 and 29,054.88

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Solution

The fourth proportional to 107,939.52, 161,920.80 and 29,054.88 is: 43,585.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,939.52 : 161,920.80 = 29,054.88 : x
  2. Step 2: Convert to fraction form
    107,939.52/161,920.80 = 29,054.88/x
  3. Step 3: Cross multiply
    107,939.52x = 161,920.80 × 29,054.88
  4. Step 4: Simplify right side
    107,939.52x = 4,704,589,413.50
  5. Step 5: Solve for x
    x = 4,704,589,413.50/107,939.52
  6. Step 6: Final answer
    x = 43,585.42

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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.