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Finding the Fourth Proportional to 53,793.86, 80,691.16 and 18,733.40

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Solution

The fourth proportional to 53,793.86, 80,691.16 and 18,733.40 is: 28,100.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,793.86 : 80,691.16 = 18,733.40 : x
  2. Step 2: Convert to fraction form
    53,793.86/80,691.16 = 18,733.40/x
  3. Step 3: Cross multiply
    53,793.86x = 80,691.16 × 18,733.40
  4. Step 4: Simplify right side
    53,793.86x = 1,511,619,776.74
  5. Step 5: Solve for x
    x = 1,511,619,776.74/53,793.86
  6. Step 6: Final answer
    x = 28,100.23

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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.