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Finding the Fourth Proportional to 68,010.36, 102,015.56 and 20,625.36

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Solution

The fourth proportional to 68,010.36, 102,015.56 and 20,625.36 is: 30,938.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,010.36 : 102,015.56 = 20,625.36 : x
  2. Step 2: Convert to fraction form
    68,010.36/102,015.56 = 20,625.36/x
  3. Step 3: Cross multiply
    68,010.36x = 102,015.56 × 20,625.36
  4. Step 4: Simplify right side
    68,010.36x = 2,104,107,650.60
  5. Step 5: Solve for x
    x = 2,104,107,650.60/68,010.36
  6. Step 6: Final answer
    x = 30,938.05

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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.