Home / 68,074.73-102,112.14-21,331.25

Finding the Fourth Proportional to 68,074.73, 102,112.14 and 21,331.25

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Solution

The fourth proportional to 68,074.73, 102,112.14 and 21,331.25 is: 31,996.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,074.73 : 102,112.14 = 21,331.25 : x
  2. Step 2: Convert to fraction form
    68,074.73/102,112.14 = 21,331.25/x
  3. Step 3: Cross multiply
    68,074.73x = 102,112.14 × 21,331.25
  4. Step 4: Simplify right side
    68,074.73x = 2,178,179,586.38
  5. Step 5: Solve for x
    x = 2,178,179,586.38/68,074.73
  6. Step 6: Final answer
    x = 31,996.89

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1.5x scale

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.