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Finding the Fourth Proportional to 68,593.05, 102,887.10 and 17,991.67

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Solution

The fourth proportional to 68,593.05, 102,887.10 and 17,991.67 is: 26,986.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,593.05 : 102,887.10 = 17,991.67 : x
  2. Step 2: Convert to fraction form
    68,593.05/102,887.10 = 17,991.67/x
  3. Step 3: Cross multiply
    68,593.05x = 102,887.10 × 17,991.67
  4. Step 4: Simplify right side
    68,593.05x = 1,851,111,086.01
  5. Step 5: Solve for x
    x = 1,851,111,086.01/68,593.05
  6. Step 6: Final answer
    x = 26,986.86

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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.