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Finding the Fourth Proportional to 68,068.62, 102,122.37 and 28,605.42

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Solution

The fourth proportional to 68,068.62, 102,122.37 and 28,605.42 is: 42,916.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,068.62 : 102,122.37 = 28,605.42 : x
  2. Step 2: Convert to fraction form
    68,068.62/102,122.37 = 28,605.42/x
  3. Step 3: Cross multiply
    68,068.62x = 102,122.37 × 28,605.42
  4. Step 4: Simplify right side
    68,068.62x = 2,921,253,285.25
  5. Step 5: Solve for x
    x = 2,921,253,285.25/68,068.62
  6. Step 6: Final answer
    x = 42,916.30

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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.