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Finding the Fourth Proportional to 36,489.75, 50,355.86 and 19,722.75

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Solution

The fourth proportional to 36,489.75, 50,355.86 and 19,722.75 is: 27,217.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,489.75 : 50,355.86 = 19,722.75 : x
  2. Step 2: Convert to fraction form
    36,489.75/50,355.86 = 19,722.75/x
  3. Step 3: Cross multiply
    36,489.75x = 50,355.86 × 19,722.75
  4. Step 4: Simplify right side
    36,489.75x = 993,156,037.82
  5. Step 5: Solve for x
    x = 993,156,037.82/36,489.75
  6. Step 6: Final answer
    x = 27,217.40

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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.