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Finding the Fourth Proportional to 68,720.26, 94,891.74 and 51,694.99

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Solution

The fourth proportional to 68,720.26, 94,891.74 and 51,694.99 is: 71,382.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,720.26 : 94,891.74 = 51,694.99 : x
  2. Step 2: Convert to fraction form
    68,720.26/94,891.74 = 51,694.99/x
  3. Step 3: Cross multiply
    68,720.26x = 94,891.74 × 51,694.99
  4. Step 4: Simplify right side
    68,720.26x = 4,905,427,550.38
  5. Step 5: Solve for x
    x = 4,905,427,550.38/68,720.26
  6. Step 6: Final answer
    x = 71,382.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.