Home / 71,811.23-99,096.82-39,979.44

Finding the Fourth Proportional to 71,811.23, 99,096.82 and 39,979.44

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Solution

The fourth proportional to 71,811.23, 99,096.82 and 39,979.44 is: 55,170.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,811.23 : 99,096.82 = 39,979.44 : x
  2. Step 2: Convert to fraction form
    71,811.23/99,096.82 = 39,979.44/x
  3. Step 3: Cross multiply
    71,811.23x = 99,096.82 × 39,979.44
  4. Step 4: Simplify right side
    71,811.23x = 3,961,835,269.43
  5. Step 5: Solve for x
    x = 3,961,835,269.43/71,811.23
  6. Step 6: Final answer
    x = 55,170.14

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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.