Home / 81,982.21-122,977.76-25,826.74

Finding the Fourth Proportional to 81,982.21, 122,977.76 and 25,826.74

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Solution

The fourth proportional to 81,982.21, 122,977.76 and 25,826.74 is: 38,741.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,982.21 : 122,977.76 = 25,826.74 : x
  2. Step 2: Convert to fraction form
    81,982.21/122,977.76 = 25,826.74/x
  3. Step 3: Cross multiply
    81,982.21x = 122,977.76 × 25,826.74
  4. Step 4: Simplify right side
    81,982.21x = 3,176,114,633.30
  5. Step 5: Solve for x
    x = 3,176,114,633.30/81,982.21
  6. Step 6: Final answer
    x = 38,741.51

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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.