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Finding the Fourth Proportional to 62,880.28, 86,787.11 and 36,040.78

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Solution

The fourth proportional to 62,880.28, 86,787.11 and 36,040.78 is: 49,743.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,880.28 : 86,787.11 = 36,040.78 : x
  2. Step 2: Convert to fraction form
    62,880.28/86,787.11 = 36,040.78/x
  3. Step 3: Cross multiply
    62,880.28x = 86,787.11 × 36,040.78
  4. Step 4: Simplify right side
    62,880.28x = 3,127,874,704.41
  5. Step 5: Solve for x
    x = 3,127,874,704.41/62,880.28
  6. Step 6: Final answer
    x = 49,743.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.