Home / 78,236.22-117,370.67-25,641.57

Finding the Fourth Proportional to 78,236.22, 117,370.67 and 25,641.57

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Solution

The fourth proportional to 78,236.22, 117,370.67 and 25,641.57 is: 38,467.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,236.22 : 117,370.67 = 25,641.57 : x
  2. Step 2: Convert to fraction form
    78,236.22/117,370.67 = 25,641.57/x
  3. Step 3: Cross multiply
    78,236.22x = 117,370.67 × 25,641.57
  4. Step 4: Simplify right side
    78,236.22x = 3,009,568,122.54
  5. Step 5: Solve for x
    x = 3,009,568,122.54/78,236.22
  6. Step 6: Final answer
    x = 38,467.71

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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.