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Finding the Fourth Proportional to 68,692.20, 102,908.70 and 64,026.60

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Solution

The fourth proportional to 68,692.20, 102,908.70 and 64,026.60 is: 95,919.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,692.20 : 102,908.70 = 64,026.60 : x
  2. Step 2: Convert to fraction form
    68,692.20/102,908.70 = 64,026.60/x
  3. Step 3: Cross multiply
    68,692.20x = 102,908.70 × 64,026.60
  4. Step 4: Simplify right side
    68,692.20x = 6,588,894,171.42
  5. Step 5: Solve for x
    x = 6,588,894,171.42/68,692.20
  6. Step 6: Final answer
    x = 95,919.10

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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.