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Finding the Fourth Proportional to 172,879.26, 259,318.94 and 54,559.86

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Solution

The fourth proportional to 172,879.26, 259,318.94 and 54,559.86 is: 81,839.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,879.26 : 259,318.94 = 54,559.86 : x
  2. Step 2: Convert to fraction form
    172,879.26/259,318.94 = 54,559.86/x
  3. Step 3: Cross multiply
    172,879.26x = 259,318.94 × 54,559.86
  4. Step 4: Simplify right side
    172,879.26x = 14,148,404,788.95
  5. Step 5: Solve for x
    x = 14,148,404,788.95/172,879.26
  6. Step 6: Final answer
    x = 81,839.80

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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.