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Finding the Fourth Proportional to 68,614.90, 102,922.35 and 67,958.80

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Solution

The fourth proportional to 68,614.90, 102,922.35 and 67,958.80 is: 101,938.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,614.90 : 102,922.35 = 67,958.80 : x
  2. Step 2: Convert to fraction form
    68,614.90/102,922.35 = 67,958.80/x
  3. Step 3: Cross multiply
    68,614.90x = 102,922.35 × 67,958.80
  4. Step 4: Simplify right side
    68,614.90x = 6,994,479,399.18
  5. Step 5: Solve for x
    x = 6,994,479,399.18/68,614.90
  6. Step 6: Final answer
    x = 101,938.20

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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.