Home / 45,379.41-68,072.36-12,099.30

Finding the Fourth Proportional to 45,379.41, 68,072.36 and 12,099.30

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Solution

The fourth proportional to 45,379.41, 68,072.36 and 12,099.30 is: 18,149.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,379.41 : 68,072.36 = 12,099.30 : x
  2. Step 2: Convert to fraction form
    45,379.41/68,072.36 = 12,099.30/x
  3. Step 3: Cross multiply
    45,379.41x = 68,072.36 × 12,099.30
  4. Step 4: Simplify right side
    45,379.41x = 823,627,844.85
  5. Step 5: Solve for x
    x = 823,627,844.85/45,379.41
  6. Step 6: Final answer
    x = 18,149.81

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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.