Home / 45,136.62-67,721.13-20,174.58

Finding the Fourth Proportional to 45,136.62, 67,721.13 and 20,174.58

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Solution

The fourth proportional to 45,136.62, 67,721.13 and 20,174.58 is: 30,269.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,136.62 : 67,721.13 = 20,174.58 : x
  2. Step 2: Convert to fraction form
    45,136.62/67,721.13 = 20,174.58/x
  3. Step 3: Cross multiply
    45,136.62x = 67,721.13 × 20,174.58
  4. Step 4: Simplify right side
    45,136.62x = 1,366,245,354.88
  5. Step 5: Solve for x
    x = 1,366,245,354.88/45,136.62
  6. Step 6: Final answer
    x = 30,269.11

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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.