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Finding the Fourth Proportional to 63,639.75, 87,817.71 and 36,783.99

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Solution

The fourth proportional to 63,639.75, 87,817.71 and 36,783.99 is: 50,758.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,639.75 : 87,817.71 = 36,783.99 : x
  2. Step 2: Convert to fraction form
    63,639.75/87,817.71 = 36,783.99/x
  3. Step 3: Cross multiply
    63,639.75x = 87,817.71 × 36,783.99
  4. Step 4: Simplify right side
    63,639.75x = 3,230,285,766.46
  5. Step 5: Solve for x
    x = 3,230,285,766.46/63,639.75
  6. Step 6: Final answer
    x = 50,758.93

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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.