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Finding the Fourth Proportional to 71,141.82, 98,176.95 and 39,310.95

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Solution

The fourth proportional to 71,141.82, 98,176.95 and 39,310.95 is: 54,249.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,141.82 : 98,176.95 = 39,310.95 : x
  2. Step 2: Convert to fraction form
    71,141.82/98,176.95 = 39,310.95/x
  3. Step 3: Cross multiply
    71,141.82x = 98,176.95 × 39,310.95
  4. Step 4: Simplify right side
    71,141.82x = 3,859,429,172.60
  5. Step 5: Solve for x
    x = 3,859,429,172.60/71,141.82
  6. Step 6: Final answer
    x = 54,249.80

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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.