Home / 68,071.05-102,109.46-21,324.33

Finding the Fourth Proportional to 68,071.05, 102,109.46 and 21,324.33

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Solution

The fourth proportional to 68,071.05, 102,109.46 and 21,324.33 is: 31,987.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,071.05 : 102,109.46 = 21,324.33 : x
  2. Step 2: Convert to fraction form
    68,071.05/102,109.46 = 21,324.33/x
  3. Step 3: Cross multiply
    68,071.05x = 102,109.46 × 21,324.33
  4. Step 4: Simplify right side
    68,071.05x = 2,177,415,714.54
  5. Step 5: Solve for x
    x = 2,177,415,714.54/68,071.05
  6. Step 6: Final answer
    x = 31,987.40

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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.