Home / 68,736.90-103,107.24-21,989.82

Finding the Fourth Proportional to 68,736.90, 103,107.24 and 21,989.82

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Solution

The fourth proportional to 68,736.90, 103,107.24 and 21,989.82 is: 32,985.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,736.90 : 103,107.24 = 21,989.82 : x
  2. Step 2: Convert to fraction form
    68,736.90/103,107.24 = 21,989.82/x
  3. Step 3: Cross multiply
    68,736.90x = 103,107.24 × 21,989.82
  4. Step 4: Simplify right side
    68,736.90x = 2,267,309,648.30
  5. Step 5: Solve for x
    x = 2,267,309,648.30/68,736.90
  6. Step 6: Final answer
    x = 32,985.33

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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.