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Finding the Fourth Proportional to 68,608.05, 102,901.64 and 18,692.07

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Solution

The fourth proportional to 68,608.05, 102,901.64 and 18,692.07 is: 28,035.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,608.05 : 102,901.64 = 18,692.07 : x
  2. Step 2: Convert to fraction form
    68,608.05/102,901.64 = 18,692.07/x
  3. Step 3: Cross multiply
    68,608.05x = 102,901.64 × 18,692.07
  4. Step 4: Simplify right side
    68,608.05x = 1,923,444,564.53
  5. Step 5: Solve for x
    x = 1,923,444,564.53/68,608.05
  6. Step 6: Final answer
    x = 28,035.26

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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.