Home / 68,721.40-103,098.30-21,974.68

Finding the Fourth Proportional to 68,721.40, 103,098.30 and 21,974.68

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Solution

The fourth proportional to 68,721.40, 103,098.30 and 21,974.68 is: 32,967.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,721.40 : 103,098.30 = 21,974.68 : x
  2. Step 2: Convert to fraction form
    68,721.40/103,098.30 = 21,974.68/x
  3. Step 3: Cross multiply
    68,721.40x = 103,098.30 × 21,974.68
  4. Step 4: Simplify right side
    68,721.40x = 2,265,552,151.04
  5. Step 5: Solve for x
    x = 2,265,552,151.04/68,721.40
  6. Step 6: Final answer
    x = 32,967.20

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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.