Home / 68,631.36-102,948.12-27,078

Finding the Fourth Proportional to 68,631.36, 102,948.12 and 27,078

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Solution

The fourth proportional to 68,631.36, 102,948.12 and 27,078 is: 40,617.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,631.36 : 102,948.12 = 27,078 : x
  2. Step 2: Convert to fraction form
    68,631.36/102,948.12 = 27,078/x
  3. Step 3: Cross multiply
    68,631.36x = 102,948.12 × 27,078
  4. Step 4: Simplify right side
    68,631.36x = 2,787,629,193.36
  5. Step 5: Solve for x
    x = 2,787,629,193.36/68,631.36
  6. Step 6: Final answer
    x = 40,617.43

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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.