Home / 68,405.10-94,414.78-40,119.90

Finding the Fourth Proportional to 68,405.10, 94,414.78 and 40,119.90

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Solution

The fourth proportional to 68,405.10, 94,414.78 and 40,119.90 is: 55,374.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,405.10 : 94,414.78 = 40,119.90 : x
  2. Step 2: Convert to fraction form
    68,405.10/94,414.78 = 40,119.90/x
  3. Step 3: Cross multiply
    68,405.10x = 94,414.78 × 40,119.90
  4. Step 4: Simplify right side
    68,405.10x = 3,787,911,532.12
  5. Step 5: Solve for x
    x = 3,787,911,532.12/68,405.10
  6. Step 6: Final answer
    x = 55,374.69

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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.