Home / 78,481.07-117,718.97-34,107.81

Finding the Fourth Proportional to 78,481.07, 117,718.97 and 34,107.81

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Solution

The fourth proportional to 78,481.07, 117,718.97 and 34,107.81 is: 51,160.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,481.07 : 117,718.97 = 34,107.81 : x
  2. Step 2: Convert to fraction form
    78,481.07/117,718.97 = 34,107.81/x
  3. Step 3: Cross multiply
    78,481.07x = 117,718.97 × 34,107.81
  4. Step 4: Simplify right side
    78,481.07x = 4,015,136,091.62
  5. Step 5: Solve for x
    x = 4,015,136,091.62/78,481.07
  6. Step 6: Final answer
    x = 51,160.57

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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.