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Finding the Fourth Proportional to 36,136.40, 49,863.88 and 20,219.60

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Solution

The fourth proportional to 36,136.40, 49,863.88 and 20,219.60 is: 27,900.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,136.40 : 49,863.88 = 20,219.60 : x
  2. Step 2: Convert to fraction form
    36,136.40/49,863.88 = 20,219.60/x
  3. Step 3: Cross multiply
    36,136.40x = 49,863.88 × 20,219.60
  4. Step 4: Simplify right side
    36,136.40x = 1,008,227,708.05
  5. Step 5: Solve for x
    x = 1,008,227,708.05/36,136.40
  6. Step 6: Final answer
    x = 27,900.61

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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.