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Finding the Fourth Proportional to 68,568.59, 102,834.17 and 20,525.92

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Solution

The fourth proportional to 68,568.59, 102,834.17 and 20,525.92 is: 30,783.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,568.59 : 102,834.17 = 20,525.92 : x
  2. Step 2: Convert to fraction form
    68,568.59/102,834.17 = 20,525.92/x
  3. Step 3: Cross multiply
    68,568.59x = 102,834.17 × 20,525.92
  4. Step 4: Simplify right side
    68,568.59x = 2,110,765,869.71
  5. Step 5: Solve for x
    x = 2,110,765,869.71/68,568.59
  6. Step 6: Final answer
    x = 30,783.28

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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.