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Finding the Fourth Proportional to 68,974.51, 103,257.64 and 42,594.43

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Solution

The fourth proportional to 68,974.51, 103,257.64 and 42,594.43 is: 63,765.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,974.51 : 103,257.64 = 42,594.43 : x
  2. Step 2: Convert to fraction form
    68,974.51/103,257.64 = 42,594.43/x
  3. Step 3: Cross multiply
    68,974.51x = 103,257.64 × 42,594.43
  4. Step 4: Simplify right side
    68,974.51x = 4,398,200,318.95
  5. Step 5: Solve for x
    x = 4,398,200,318.95/68,974.51
  6. Step 6: Final answer
    x = 63,765.59

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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.