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Finding the Fourth Proportional to 36,212.45, 54,322.43 and 9,917.20

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Solution

The fourth proportional to 36,212.45, 54,322.43 and 9,917.20 is: 14,876.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,212.45 : 54,322.43 = 9,917.20 : x
  2. Step 2: Convert to fraction form
    36,212.45/54,322.43 = 9,917.20/x
  3. Step 3: Cross multiply
    36,212.45x = 54,322.43 × 9,917.20
  4. Step 4: Simplify right side
    36,212.45x = 538,726,402.80
  5. Step 5: Solve for x
    x = 538,726,402.80/36,212.45
  6. Step 6: Final answer
    x = 14,876.83

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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.