Home / 68,448.20-102,422.51-40,381.70

Finding the Fourth Proportional to 68,448.20, 102,422.51 and 40,381.70

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Solution

The fourth proportional to 68,448.20, 102,422.51 and 40,381.70 is: 60,425.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,448.20 : 102,422.51 = 40,381.70 : x
  2. Step 2: Convert to fraction form
    68,448.20/102,422.51 = 40,381.70/x
  3. Step 3: Cross multiply
    68,448.20x = 102,422.51 × 40,381.70
  4. Step 4: Simplify right side
    68,448.20x = 4,135,995,429.08
  5. Step 5: Solve for x
    x = 4,135,995,429.08/68,448.20
  6. Step 6: Final answer
    x = 60,425.19

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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.