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Finding the Fourth Proportional to 62,889.54, 94,314.29 and 20,761.78

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Solution

The fourth proportional to 62,889.54, 94,314.29 and 20,761.78 is: 31,136.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,889.54 : 94,314.29 = 20,761.78 : x
  2. Step 2: Convert to fraction form
    62,889.54/94,314.29 = 20,761.78/x
  3. Step 3: Cross multiply
    62,889.54x = 94,314.29 × 20,761.78
  4. Step 4: Simplify right side
    62,889.54x = 1,958,132,179.12
  5. Step 5: Solve for x
    x = 1,958,132,179.12/62,889.54
  6. Step 6: Final answer
    x = 31,136.06

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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.