Home / 81,961.29-122,941.53-25,806.15

Finding the Fourth Proportional to 81,961.29, 122,941.53 and 25,806.15

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Solution

The fourth proportional to 81,961.29, 122,941.53 and 25,806.15 is: 38,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,961.29 : 122,941.53 = 25,806.15 : x
  2. Step 2: Convert to fraction form
    81,961.29/122,941.53 = 25,806.15/x
  3. Step 3: Cross multiply
    81,961.29x = 122,941.53 × 25,806.15
  4. Step 4: Simplify right side
    81,961.29x = 3,172,647,564.41
  5. Step 5: Solve for x
    x = 3,172,647,564.41/81,961.29
  6. Step 6: Final answer
    x = 38,709.10

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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.