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Finding the Fourth Proportional to 68,018.59, 102,028.12 and 20,634.09

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Solution

The fourth proportional to 68,018.59, 102,028.12 and 20,634.09 is: 30,951.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,018.59 : 102,028.12 = 20,634.09 : x
  2. Step 2: Convert to fraction form
    68,018.59/102,028.12 = 20,634.09/x
  3. Step 3: Cross multiply
    68,018.59x = 102,028.12 × 20,634.09
  4. Step 4: Simplify right side
    68,018.59x = 2,105,257,717.27
  5. Step 5: Solve for x
    x = 2,105,257,717.27/68,018.59
  6. Step 6: Final answer
    x = 30,951.21

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1.5x scale

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.