Home / 78,198.97-117,280.47-46,617.95

Finding the Fourth Proportional to 78,198.97, 117,280.47 and 46,617.95

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Solution

The fourth proportional to 78,198.97, 117,280.47 and 46,617.95 is: 69,916.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,198.97 : 117,280.47 = 46,617.95 : x
  2. Step 2: Convert to fraction form
    78,198.97/117,280.47 = 46,617.95/x
  3. Step 3: Cross multiply
    78,198.97x = 117,280.47 × 46,617.95
  4. Step 4: Simplify right side
    78,198.97x = 5,467,375,086.44
  5. Step 5: Solve for x
    x = 5,467,375,086.44/78,198.97
  6. Step 6: Final answer
    x = 69,916.20

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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.