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Finding the Fourth Proportional to 68,813.99, 103,202.24 and 18,882.25

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Solution

The fourth proportional to 68,813.99, 103,202.24 and 18,882.25 is: 28,318.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,813.99 : 103,202.24 = 18,882.25 : x
  2. Step 2: Convert to fraction form
    68,813.99/103,202.24 = 18,882.25/x
  3. Step 3: Cross multiply
    68,813.99x = 103,202.24 × 18,882.25
  4. Step 4: Simplify right side
    68,813.99x = 1,948,690,143.82
  5. Step 5: Solve for x
    x = 1,948,690,143.82/68,813.99
  6. Step 6: Final answer
    x = 28,318.23

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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.