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Finding the Fourth Proportional to 63,735.48, 87,950.88 and 39,861

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Solution

The fourth proportional to 63,735.48, 87,950.88 and 39,861 is: 55,005.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,735.48 : 87,950.88 = 39,861 : x
  2. Step 2: Convert to fraction form
    63,735.48/87,950.88 = 39,861/x
  3. Step 3: Cross multiply
    63,735.48x = 87,950.88 × 39,861
  4. Step 4: Simplify right side
    63,735.48x = 3,505,810,027.68
  5. Step 5: Solve for x
    x = 3,505,810,027.68/63,735.48
  6. Step 6: Final answer
    x = 55,005.63

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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.