Home / 78,680.06-117,948.72-39,249.26

Finding the Fourth Proportional to 78,680.06, 117,948.72 and 39,249.26

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Solution

The fourth proportional to 78,680.06, 117,948.72 and 39,249.26 is: 58,838.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,680.06 : 117,948.72 = 39,249.26 : x
  2. Step 2: Convert to fraction form
    78,680.06/117,948.72 = 39,249.26/x
  3. Step 3: Cross multiply
    78,680.06x = 117,948.72 × 39,249.26
  4. Step 4: Simplify right side
    78,680.06x = 4,629,399,977.95
  5. Step 5: Solve for x
    x = 4,629,399,977.95/78,680.06
  6. Step 6: Final answer
    x = 58,838.29

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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.