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Finding the Fourth Proportional to 36,781.92, 50,762.76 and 21,679.24

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Solution

The fourth proportional to 36,781.92, 50,762.76 and 21,679.24 is: 29,919.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,781.92 : 50,762.76 = 21,679.24 : x
  2. Step 2: Convert to fraction form
    36,781.92/50,762.76 = 21,679.24/x
  3. Step 3: Cross multiply
    36,781.92x = 50,762.76 × 21,679.24
  4. Step 4: Simplify right side
    36,781.92x = 1,100,498,057.10
  5. Step 5: Solve for x
    x = 1,100,498,057.10/36,781.92
  6. Step 6: Final answer
    x = 29,919.54

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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.