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Finding the Fourth Proportional to 71,692.48, 98,937.62 and 39,863.53

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Solution

The fourth proportional to 71,692.48, 98,937.62 and 39,863.53 is: 55,012.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,692.48 : 98,937.62 = 39,863.53 : x
  2. Step 2: Convert to fraction form
    71,692.48/98,937.62 = 39,863.53/x
  3. Step 3: Cross multiply
    71,692.48x = 98,937.62 × 39,863.53
  4. Step 4: Simplify right side
    71,692.48x = 3,944,002,783.00
  5. Step 5: Solve for x
    x = 3,944,002,783.00/71,692.48
  6. Step 6: Final answer
    x = 55,012.78

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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.