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Finding the Fourth Proportional to 71,811.97, 99,104.84 and 41,606.80

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Solution

The fourth proportional to 71,811.97, 99,104.84 and 41,606.80 is: 57,419.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,811.97 : 99,104.84 = 41,606.80 : x
  2. Step 2: Convert to fraction form
    71,811.97/99,104.84 = 41,606.80/x
  3. Step 3: Cross multiply
    71,811.97x = 99,104.84 × 41,606.80
  4. Step 4: Simplify right side
    71,811.97x = 4,123,435,256.91
  5. Step 5: Solve for x
    x = 4,123,435,256.91/71,811.97
  6. Step 6: Final answer
    x = 57,419.89

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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.