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Finding the Fourth Proportional to 53,992.80, 80,994.24 and 20,249.82

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Solution

The fourth proportional to 53,992.80, 80,994.24 and 20,249.82 is: 30,376.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,992.80 : 80,994.24 = 20,249.82 : x
  2. Step 2: Convert to fraction form
    53,992.80/80,994.24 = 20,249.82/x
  3. Step 3: Cross multiply
    53,992.80x = 80,994.24 × 20,249.82
  4. Step 4: Simplify right side
    53,992.80x = 1,640,118,781.04
  5. Step 5: Solve for x
    x = 1,640,118,781.04/53,992.80
  6. Step 6: Final answer
    x = 30,376.62

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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.