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Finding the Fourth Proportional to 71,676.16, 107,514.48 and 21,756.68

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Solution

The fourth proportional to 71,676.16, 107,514.48 and 21,756.68 is: 32,635.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,676.16 : 107,514.48 = 21,756.68 : x
  2. Step 2: Convert to fraction form
    71,676.16/107,514.48 = 21,756.68/x
  3. Step 3: Cross multiply
    71,676.16x = 107,514.48 × 21,756.68
  4. Step 4: Simplify right side
    71,676.16x = 2,339,158,136.73
  5. Step 5: Solve for x
    x = 2,339,158,136.73/71,676.16
  6. Step 6: Final answer
    x = 32,635.09

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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.