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Finding the Fourth Proportional to 68,789.47, 103,184.21 and 45,410.44

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Solution

The fourth proportional to 68,789.47, 103,184.21 and 45,410.44 is: 68,115.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,789.47 : 103,184.21 = 45,410.44 : x
  2. Step 2: Convert to fraction form
    68,789.47/103,184.21 = 45,410.44/x
  3. Step 3: Cross multiply
    68,789.47x = 103,184.21 × 45,410.44
  4. Step 4: Simplify right side
    68,789.47x = 4,685,639,634.18
  5. Step 5: Solve for x
    x = 4,685,639,634.18/68,789.47
  6. Step 6: Final answer
    x = 68,115.66

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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.