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Finding the Fourth Proportional to 36,868.78, 50,879.64 and 20,101.78

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Solution

The fourth proportional to 36,868.78, 50,879.64 and 20,101.78 is: 27,740.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,868.78 : 50,879.64 = 20,101.78 : x
  2. Step 2: Convert to fraction form
    36,868.78/50,879.64 = 20,101.78/x
  3. Step 3: Cross multiply
    36,868.78x = 50,879.64 × 20,101.78
  4. Step 4: Simplify right side
    36,868.78x = 1,022,771,329.76
  5. Step 5: Solve for x
    x = 1,022,771,329.76/36,868.78
  6. Step 6: Final answer
    x = 27,740.85

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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.