Home / 68,286.11-102,429.16-21,542.63

Finding the Fourth Proportional to 68,286.11, 102,429.16 and 21,542.63

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Solution

The fourth proportional to 68,286.11, 102,429.16 and 21,542.63 is: 32,313.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,286.11 : 102,429.16 = 21,542.63 : x
  2. Step 2: Convert to fraction form
    68,286.11/102,429.16 = 21,542.63/x
  3. Step 3: Cross multiply
    68,286.11x = 102,429.16 × 21,542.63
  4. Step 4: Simplify right side
    68,286.11x = 2,206,592,929.09
  5. Step 5: Solve for x
    x = 2,206,592,929.09/68,286.11
  6. Step 6: Final answer
    x = 32,313.94

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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.