Home / 68,711.08-103,076.41-21,330.26

Finding the Fourth Proportional to 68,711.08, 103,076.41 and 21,330.26

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Solution

The fourth proportional to 68,711.08, 103,076.41 and 21,330.26 is: 31,998.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,711.08 : 103,076.41 = 21,330.26 : x
  2. Step 2: Convert to fraction form
    68,711.08/103,076.41 = 21,330.26/x
  3. Step 3: Cross multiply
    68,711.08x = 103,076.41 × 21,330.26
  4. Step 4: Simplify right side
    68,711.08x = 2,198,646,829.53
  5. Step 5: Solve for x
    x = 2,198,646,829.53/68,711.08
  6. Step 6: Final answer
    x = 31,998.43

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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.