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Finding the Fourth Proportional to 36,821.52, 50,813.72 and 20,468.72

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Solution

The fourth proportional to 36,821.52, 50,813.72 and 20,468.72 is: 28,246.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,821.52 : 50,813.72 = 20,468.72 : x
  2. Step 2: Convert to fraction form
    36,821.52/50,813.72 = 20,468.72/x
  3. Step 3: Cross multiply
    36,821.52x = 50,813.72 × 20,468.72
  4. Step 4: Simplify right side
    36,821.52x = 1,040,091,450.43
  5. Step 5: Solve for x
    x = 1,040,091,450.43/36,821.52
  6. Step 6: Final answer
    x = 28,246.84

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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.