Home / 76,531.82-114,806.52-20,372.70

Finding the Fourth Proportional to 76,531.82, 114,806.52 and 20,372.70

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Solution

The fourth proportional to 76,531.82, 114,806.52 and 20,372.70 is: 30,561.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,531.82 : 114,806.52 = 20,372.70 : x
  2. Step 2: Convert to fraction form
    76,531.82/114,806.52 = 20,372.70/x
  3. Step 3: Cross multiply
    76,531.82x = 114,806.52 × 20,372.70
  4. Step 4: Simplify right side
    76,531.82x = 2,338,918,790.00
  5. Step 5: Solve for x
    x = 2,338,918,790.00/76,531.82
  6. Step 6: Final answer
    x = 30,561.39

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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.