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Finding the Fourth Proportional to 36,572.46, 50,474.79 and 20,661.90

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Solution

The fourth proportional to 36,572.46, 50,474.79 and 20,661.90 is: 28,516.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,572.46 : 50,474.79 = 20,661.90 : x
  2. Step 2: Convert to fraction form
    36,572.46/50,474.79 = 20,661.90/x
  3. Step 3: Cross multiply
    36,572.46x = 50,474.79 × 20,661.90
  4. Step 4: Simplify right side
    36,572.46x = 1,042,905,063.50
  5. Step 5: Solve for x
    x = 1,042,905,063.50/36,572.46
  6. Step 6: Final answer
    x = 28,516.13

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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.