Home / 68,072.05-102,110.96-21,325.33

Finding the Fourth Proportional to 68,072.05, 102,110.96 and 21,325.33

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Solution

The fourth proportional to 68,072.05, 102,110.96 and 21,325.33 is: 31,988.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,072.05 : 102,110.96 = 21,325.33 : x
  2. Step 2: Convert to fraction form
    68,072.05/102,110.96 = 21,325.33/x
  3. Step 3: Cross multiply
    68,072.05x = 102,110.96 × 21,325.33
  4. Step 4: Simplify right side
    68,072.05x = 2,177,549,918.62
  5. Step 5: Solve for x
    x = 2,177,549,918.62/68,072.05
  6. Step 6: Final answer
    x = 31,988.90

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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.