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Finding the Fourth Proportional to 36,350.72, 50,164 and 20,435.20

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Solution

The fourth proportional to 36,350.72, 50,164 and 20,435.20 is: 28,200.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,350.72 : 50,164 = 20,435.20 : x
  2. Step 2: Convert to fraction form
    36,350.72/50,164 = 20,435.20/x
  3. Step 3: Cross multiply
    36,350.72x = 50,164 × 20,435.20
  4. Step 4: Simplify right side
    36,350.72x = 1,025,111,372.80
  5. Step 5: Solve for x
    x = 1,025,111,372.80/36,350.72
  6. Step 6: Final answer
    x = 28,200.58

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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.