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Finding the Fourth Proportional to 56,548.43, 84,836.62 and 39,940.90

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Solution

The fourth proportional to 56,548.43, 84,836.62 and 39,940.90 is: 59,921.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,548.43 : 84,836.62 = 39,940.90 : x
  2. Step 2: Convert to fraction form
    56,548.43/84,836.62 = 39,940.90/x
  3. Step 3: Cross multiply
    56,548.43x = 84,836.62 × 39,940.90
  4. Step 4: Simplify right side
    56,548.43x = 3,388,450,568.93
  5. Step 5: Solve for x
    x = 3,388,450,568.93/56,548.43
  6. Step 6: Final answer
    x = 59,921.22

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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.