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Finding the Fourth Proportional to 45,446.55, 68,137 and 19,136.94

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Solution

The fourth proportional to 45,446.55, 68,137 and 19,136.94 is: 28,691.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,446.55 : 68,137 = 19,136.94 : x
  2. Step 2: Convert to fraction form
    45,446.55/68,137 = 19,136.94/x
  3. Step 3: Cross multiply
    45,446.55x = 68,137 × 19,136.94
  4. Step 4: Simplify right side
    45,446.55x = 1,303,933,680.78
  5. Step 5: Solve for x
    x = 1,303,933,680.78/45,446.55
  6. Step 6: Final answer
    x = 28,691.59

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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.