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Finding the Fourth Proportional to 36,321.44, 50,124.87 and 20,405.57

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Solution

The fourth proportional to 36,321.44, 50,124.87 and 20,405.57 is: 28,160.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,321.44 : 50,124.87 = 20,405.57 : x
  2. Step 2: Convert to fraction form
    36,321.44/50,124.87 = 20,405.57/x
  3. Step 3: Cross multiply
    36,321.44x = 50,124.87 × 20,405.57
  4. Step 4: Simplify right side
    36,321.44x = 1,022,826,292.90
  5. Step 5: Solve for x
    x = 1,022,826,292.90/36,321.44
  6. Step 6: Final answer
    x = 28,160.40

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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.