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Finding the Fourth Proportional to 43,850.88, 65,787.12 and 12,685.68

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Solution

The fourth proportional to 43,850.88, 65,787.12 and 12,685.68 is: 19,031.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,850.88 : 65,787.12 = 12,685.68 : x
  2. Step 2: Convert to fraction form
    43,850.88/65,787.12 = 12,685.68/x
  3. Step 3: Cross multiply
    43,850.88x = 65,787.12 × 12,685.68
  4. Step 4: Simplify right side
    43,850.88x = 834,554,352.44
  5. Step 5: Solve for x
    x = 834,554,352.44/43,850.88
  6. Step 6: Final answer
    x = 19,031.64

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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.