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Finding the Fourth Proportional to 72,843.78, 100,524.11 and 40,578.77

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Solution

The fourth proportional to 72,843.78, 100,524.11 and 40,578.77 is: 55,998.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,843.78 : 100,524.11 = 40,578.77 : x
  2. Step 2: Convert to fraction form
    72,843.78/100,524.11 = 40,578.77/x
  3. Step 3: Cross multiply
    72,843.78x = 100,524.11 × 40,578.77
  4. Step 4: Simplify right side
    72,843.78x = 4,079,145,129.94
  5. Step 5: Solve for x
    x = 4,079,145,129.94/72,843.78
  6. Step 6: Final answer
    x = 55,998.54

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1.5x scale

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.