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Finding the Fourth Proportional to 36,489.78, 50,355.95 and 19,722.78

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Solution

The fourth proportional to 36,489.78, 50,355.95 and 19,722.78 is: 27,217.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,489.78 : 50,355.95 = 19,722.78 : x
  2. Step 2: Convert to fraction form
    36,489.78/50,355.95 = 19,722.78/x
  3. Step 3: Cross multiply
    36,489.78x = 50,355.95 × 19,722.78
  4. Step 4: Simplify right side
    36,489.78x = 993,159,224.93
  5. Step 5: Solve for x
    x = 993,159,224.93/36,489.78
  6. Step 6: Final answer
    x = 27,217.46

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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.