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Finding the Fourth Proportional to 68,454.20, 102,636.90 and 29,000.60

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Solution

The fourth proportional to 68,454.20, 102,636.90 and 29,000.60 is: 43,482.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,454.20 : 102,636.90 = 29,000.60 : x
  2. Step 2: Convert to fraction form
    68,454.20/102,636.90 = 29,000.60/x
  3. Step 3: Cross multiply
    68,454.20x = 102,636.90 × 29,000.60
  4. Step 4: Simplify right side
    68,454.20x = 2,976,531,682.14
  5. Step 5: Solve for x
    x = 2,976,531,682.14/68,454.20
  6. Step 6: Final answer
    x = 43,482.09

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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.