Home / 68,378.58-94,361.49-40,086.90

Finding the Fourth Proportional to 68,378.58, 94,361.49 and 40,086.90

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Solution

The fourth proportional to 68,378.58, 94,361.49 and 40,086.90 is: 55,319.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,378.58 : 94,361.49 = 40,086.90 : x
  2. Step 2: Convert to fraction form
    68,378.58/94,361.49 = 40,086.90/x
  3. Step 3: Cross multiply
    68,378.58x = 94,361.49 × 40,086.90
  4. Step 4: Simplify right side
    68,378.58x = 3,782,659,613.48
  5. Step 5: Solve for x
    x = 3,782,659,613.48/68,378.58
  6. Step 6: Final answer
    x = 55,319.36

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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.