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Finding the Fourth Proportional to 68,725.40, 103,028.10 and 26,634.20

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Solution

The fourth proportional to 68,725.40, 103,028.10 and 26,634.20 is: 39,928.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,725.40 : 103,028.10 = 26,634.20 : x
  2. Step 2: Convert to fraction form
    68,725.40/103,028.10 = 26,634.20/x
  3. Step 3: Cross multiply
    68,725.40x = 103,028.10 × 26,634.20
  4. Step 4: Simplify right side
    68,725.40x = 2,744,071,021.02
  5. Step 5: Solve for x
    x = 2,744,071,021.02/68,725.40
  6. Step 6: Final answer
    x = 39,928.05

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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.