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Finding the Fourth Proportional to 36,685.20, 55,027.80 and 21,910.80

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Solution

The fourth proportional to 36,685.20, 55,027.80 and 21,910.80 is: 32,866.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,685.20 : 55,027.80 = 21,910.80 : x
  2. Step 2: Convert to fraction form
    36,685.20/55,027.80 = 21,910.80/x
  3. Step 3: Cross multiply
    36,685.20x = 55,027.80 × 21,910.80
  4. Step 4: Simplify right side
    36,685.20x = 1,205,703,120.24
  5. Step 5: Solve for x
    x = 1,205,703,120.24/36,685.20
  6. Step 6: Final answer
    x = 32,866.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.