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Finding the Fourth Proportional to 36,891, 50,909.76 and 20,125.08

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Solution

The fourth proportional to 36,891, 50,909.76 and 20,125.08 is: 27,772.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,891 : 50,909.76 = 20,125.08 : x
  2. Step 2: Convert to fraction form
    36,891/50,909.76 = 20,125.08/x
  3. Step 3: Cross multiply
    36,891x = 50,909.76 × 20,125.08
  4. Step 4: Simplify right side
    36,891x = 1,024,562,992.78
  5. Step 5: Solve for x
    x = 1,024,562,992.78/36,891
  6. Step 6: Final answer
    x = 27,772.71

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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.