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Finding the Fourth Proportional to 36,787, 50,767.73 and 21,680.30

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Solution

The fourth proportional to 36,787, 50,767.73 and 21,680.30 is: 29,919.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,787 : 50,767.73 = 21,680.30 : x
  2. Step 2: Convert to fraction form
    36,787/50,767.73 = 21,680.30/x
  3. Step 3: Cross multiply
    36,787x = 50,767.73 × 21,680.30
  4. Step 4: Simplify right side
    36,787x = 1,100,659,616.72
  5. Step 5: Solve for x
    x = 1,100,659,616.72/36,787
  6. Step 6: Final answer
    x = 29,919.80

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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.