Home / 81,265.82-121,806.18-50,885.15

Finding the Fourth Proportional to 81,265.82, 121,806.18 and 50,885.15

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Solution

The fourth proportional to 81,265.82, 121,806.18 and 50,885.15 is: 76,269.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,265.82 : 121,806.18 = 50,885.15 : x
  2. Step 2: Convert to fraction form
    81,265.82/121,806.18 = 50,885.15/x
  3. Step 3: Cross multiply
    81,265.82x = 121,806.18 × 50,885.15
  4. Step 4: Simplify right side
    81,265.82x = 6,198,125,131.20
  5. Step 5: Solve for x
    x = 6,198,125,131.20/81,265.82
  6. Step 6: Final answer
    x = 76,269.77

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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.