Home / 68,739-94,845.42-40,447.80

Finding the Fourth Proportional to 68,739, 94,845.42 and 40,447.80

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Solution

The fourth proportional to 68,739, 94,845.42 and 40,447.80 is: 55,809.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,739 : 94,845.42 = 40,447.80 : x
  2. Step 2: Convert to fraction form
    68,739/94,845.42 = 40,447.80/x
  3. Step 3: Cross multiply
    68,739x = 94,845.42 × 40,447.80
  4. Step 4: Simplify right side
    68,739x = 3,836,288,579.08
  5. Step 5: Solve for x
    x = 3,836,288,579.08/68,739
  6. Step 6: Final answer
    x = 55,809.49

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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.