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Finding the Fourth Proportional to 45,687.34, 68,531.04 and 12,407.44

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Solution

The fourth proportional to 45,687.34, 68,531.04 and 12,407.44 is: 18,611.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,687.34 : 68,531.04 = 12,407.44 : x
  2. Step 2: Convert to fraction form
    45,687.34/68,531.04 = 12,407.44/x
  3. Step 3: Cross multiply
    45,687.34x = 68,531.04 × 12,407.44
  4. Step 4: Simplify right side
    45,687.34x = 850,294,766.94
  5. Step 5: Solve for x
    x = 850,294,766.94/45,687.34
  6. Step 6: Final answer
    x = 18,611.17

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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.