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Finding the Fourth Proportional to 36,681.92, 50,619.50 and 20,550.78

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Solution

The fourth proportional to 36,681.92, 50,619.50 and 20,550.78 is: 28,359.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,681.92 : 50,619.50 = 20,550.78 : x
  2. Step 2: Convert to fraction form
    36,681.92/50,619.50 = 20,550.78/x
  3. Step 3: Cross multiply
    36,681.92x = 50,619.50 × 20,550.78
  4. Step 4: Simplify right side
    36,681.92x = 1,040,270,208.21
  5. Step 5: Solve for x
    x = 1,040,270,208.21/36,681.92
  6. Step 6: Final answer
    x = 28,359.21

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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.