Home / 68,531.22-102,806.49-21,150.15

Finding the Fourth Proportional to 68,531.22, 102,806.49 and 21,150.15

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Solution

The fourth proportional to 68,531.22, 102,806.49 and 21,150.15 is: 31,728.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,531.22 : 102,806.49 = 21,150.15 : x
  2. Step 2: Convert to fraction form
    68,531.22/102,806.49 = 21,150.15/x
  3. Step 3: Cross multiply
    68,531.22x = 102,806.49 × 21,150.15
  4. Step 4: Simplify right side
    68,531.22x = 2,174,372,684.47
  5. Step 5: Solve for x
    x = 2,174,372,684.47/68,531.22
  6. Step 6: Final answer
    x = 31,728.21

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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.