Home / 68,076.73-102,115.14-21,333.25

Finding the Fourth Proportional to 68,076.73, 102,115.14 and 21,333.25

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Solution

The fourth proportional to 68,076.73, 102,115.14 and 21,333.25 is: 31,999.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,076.73 : 102,115.14 = 21,333.25 : x
  2. Step 2: Convert to fraction form
    68,076.73/102,115.14 = 21,333.25/x
  3. Step 3: Cross multiply
    68,076.73x = 102,115.14 × 21,333.25
  4. Step 4: Simplify right side
    68,076.73x = 2,178,447,810.41
  5. Step 5: Solve for x
    x = 2,178,447,810.41/68,076.73
  6. Step 6: Final answer
    x = 31,999.89

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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.