Home / 81,791.08-122,686.64-25,631.18

Finding the Fourth Proportional to 81,791.08, 122,686.64 and 25,631.18

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Solution

The fourth proportional to 81,791.08, 122,686.64 and 25,631.18 is: 38,446.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,791.08 : 122,686.64 = 25,631.18 : x
  2. Step 2: Convert to fraction form
    81,791.08/122,686.64 = 25,631.18/x
  3. Step 3: Cross multiply
    81,791.08x = 122,686.64 × 25,631.18
  4. Step 4: Simplify right side
    81,791.08x = 3,144,603,353.44
  5. Step 5: Solve for x
    x = 3,144,603,353.44/81,791.08
  6. Step 6: Final answer
    x = 38,446.78

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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.