Home / 71,863.05-107,712.82-43,721.07

Finding the Fourth Proportional to 71,863.05, 107,712.82 and 43,721.07

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Solution

The fourth proportional to 71,863.05, 107,712.82 and 43,721.07 is: 65,531.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,863.05 : 107,712.82 = 43,721.07 : x
  2. Step 2: Convert to fraction form
    71,863.05/107,712.82 = 43,721.07/x
  3. Step 3: Cross multiply
    71,863.05x = 107,712.82 × 43,721.07
  4. Step 4: Simplify right side
    71,863.05x = 4,709,318,985.95
  5. Step 5: Solve for x
    x = 4,709,318,985.95/71,863.05
  6. Step 6: Final answer
    x = 65,531.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.