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Finding the Fourth Proportional to 36,689.52, 50,631.60 and 20,774.88

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Solution

The fourth proportional to 36,689.52, 50,631.60 and 20,774.88 is: 28,669.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,689.52 : 50,631.60 = 20,774.88 : x
  2. Step 2: Convert to fraction form
    36,689.52/50,631.60 = 20,774.88/x
  3. Step 3: Cross multiply
    36,689.52x = 50,631.60 × 20,774.88
  4. Step 4: Simplify right side
    36,689.52x = 1,051,865,414.21
  5. Step 5: Solve for x
    x = 1,051,865,414.21/36,689.52
  6. Step 6: Final answer
    x = 28,669.37

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.