Home / 78,480.45-117,718.07-34,107.26

Finding the Fourth Proportional to 78,480.45, 117,718.07 and 34,107.26

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Solution

The fourth proportional to 78,480.45, 117,718.07 and 34,107.26 is: 51,159.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,480.45 : 117,718.07 = 34,107.26 : x
  2. Step 2: Convert to fraction form
    78,480.45/117,718.07 = 34,107.26/x
  3. Step 3: Cross multiply
    78,480.45x = 117,718.07 × 34,107.26
  4. Step 4: Simplify right side
    78,480.45x = 4,015,040,316.87
  5. Step 5: Solve for x
    x = 4,015,040,316.87/78,480.45
  6. Step 6: Final answer
    x = 51,159.75

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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.