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Finding the Fourth Proportional to 68,010.67, 102,015.84 and 18,090.77

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Solution

The fourth proportional to 68,010.67, 102,015.84 and 18,090.77 is: 27,136.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,010.67 : 102,015.84 = 18,090.77 : x
  2. Step 2: Convert to fraction form
    68,010.67/102,015.84 = 18,090.77/x
  3. Step 3: Cross multiply
    68,010.67x = 102,015.84 × 18,090.77
  4. Step 4: Simplify right side
    68,010.67x = 1,845,545,097.80
  5. Step 5: Solve for x
    x = 1,845,545,097.80/68,010.67
  6. Step 6: Final answer
    x = 27,136.11

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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.