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Finding the Fourth Proportional to 45,379.91, 68,073.11 and 12,099.80

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Solution

The fourth proportional to 45,379.91, 68,073.11 and 12,099.80 is: 18,150.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,379.91 : 68,073.11 = 12,099.80 : x
  2. Step 2: Convert to fraction form
    45,379.91/68,073.11 = 12,099.80/x
  3. Step 3: Cross multiply
    45,379.91x = 68,073.11 × 12,099.80
  4. Step 4: Simplify right side
    45,379.91x = 823,670,955.88
  5. Step 5: Solve for x
    x = 823,670,955.88/45,379.91
  6. Step 6: Final answer
    x = 18,150.56

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1.5x scale

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.