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Finding the Fourth Proportional to 68,854.67, 103,261.98 and 28,872.55

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Solution

The fourth proportional to 68,854.67, 103,261.98 and 28,872.55 is: 43,300.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,854.67 : 103,261.98 = 28,872.55 : x
  2. Step 2: Convert to fraction form
    68,854.67/103,261.98 = 28,872.55/x
  3. Step 3: Cross multiply
    68,854.67x = 103,261.98 × 28,872.55
  4. Step 4: Simplify right side
    68,854.67x = 2,981,436,422.49
  5. Step 5: Solve for x
    x = 2,981,436,422.49/68,854.67
  6. Step 6: Final answer
    x = 43,300.43

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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.