Home / 45,919.31-68,879.34-12,641.22

Finding the Fourth Proportional to 45,919.31, 68,879.34 and 12,641.22

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Solution

The fourth proportional to 45,919.31, 68,879.34 and 12,641.22 is: 18,961.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,919.31 : 68,879.34 = 12,641.22 : x
  2. Step 2: Convert to fraction form
    45,919.31/68,879.34 = 12,641.22/x
  3. Step 3: Cross multiply
    45,919.31x = 68,879.34 × 12,641.22
  4. Step 4: Simplify right side
    45,919.31x = 870,718,890.39
  5. Step 5: Solve for x
    x = 870,718,890.39/45,919.31
  6. Step 6: Final answer
    x = 18,961.94

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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.