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Finding the Fourth Proportional to 68,114.67, 102,188.40 and 21,367.53

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Solution

The fourth proportional to 68,114.67, 102,188.40 and 21,367.53 is: 32,056.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,114.67 : 102,188.40 = 21,367.53 : x
  2. Step 2: Convert to fraction form
    68,114.67/102,188.40 = 21,367.53/x
  3. Step 3: Cross multiply
    68,114.67x = 102,188.40 × 21,367.53
  4. Step 4: Simplify right side
    68,114.67x = 2,183,513,702.65
  5. Step 5: Solve for x
    x = 2,183,513,702.65/68,114.67
  6. Step 6: Final answer
    x = 32,056.44

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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.