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Finding the Fourth Proportional to 62,980.64, 86,910.48 and 36,103.88

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Solution

The fourth proportional to 62,980.64, 86,910.48 and 36,103.88 is: 49,821.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,980.64 : 86,910.48 = 36,103.88 : x
  2. Step 2: Convert to fraction form
    62,980.64/86,910.48 = 36,103.88/x
  3. Step 3: Cross multiply
    62,980.64x = 86,910.48 × 36,103.88
  4. Step 4: Simplify right side
    62,980.64x = 3,137,805,540.66
  5. Step 5: Solve for x
    x = 3,137,805,540.66/62,980.64
  6. Step 6: Final answer
    x = 49,821.75

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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.