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Finding the Fourth Proportional to 43,687.31, 65,531.04 and 18,725.41

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Solution

The fourth proportional to 43,687.31, 65,531.04 and 18,725.41 is: 28,088.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,687.31 : 65,531.04 = 18,725.41 : x
  2. Step 2: Convert to fraction form
    43,687.31/65,531.04 = 18,725.41/x
  3. Step 3: Cross multiply
    43,687.31x = 65,531.04 × 18,725.41
  4. Step 4: Simplify right side
    43,687.31x = 1,227,095,591.73
  5. Step 5: Solve for x
    x = 1,227,095,591.73/43,687.31
  6. Step 6: Final answer
    x = 28,088.15

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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.