Home / 68,072.73-102,109.14-21,329.25

Finding the Fourth Proportional to 68,072.73, 102,109.14 and 21,329.25

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Solution

The fourth proportional to 68,072.73, 102,109.14 and 21,329.25 is: 31,993.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,072.73 : 102,109.14 = 21,329.25 : x
  2. Step 2: Convert to fraction form
    68,072.73/102,109.14 = 21,329.25/x
  3. Step 3: Cross multiply
    68,072.73x = 102,109.14 × 21,329.25
  4. Step 4: Simplify right side
    68,072.73x = 2,177,911,374.35
  5. Step 5: Solve for x
    x = 2,177,911,374.35/68,072.73
  6. Step 6: Final answer
    x = 31,993.89

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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.