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Finding the Fourth Proportional to 71,836.44, 107,771.50 and 21,916.51

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Solution

The fourth proportional to 71,836.44, 107,771.50 and 21,916.51 is: 32,879.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,836.44 : 107,771.50 = 21,916.51 : x
  2. Step 2: Convert to fraction form
    71,836.44/107,771.50 = 21,916.51/x
  3. Step 3: Cross multiply
    71,836.44x = 107,771.50 × 21,916.51
  4. Step 4: Simplify right side
    71,836.44x = 2,361,975,157.47
  5. Step 5: Solve for x
    x = 2,361,975,157.47/71,836.44
  6. Step 6: Final answer
    x = 32,879.90

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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.