Home / 81,640.13-122,507.46-34,251

Finding the Fourth Proportional to 81,640.13, 122,507.46 and 34,251

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Solution

The fourth proportional to 81,640.13, 122,507.46 and 34,251 is: 51,396.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,640.13 : 122,507.46 = 34,251 : x
  2. Step 2: Convert to fraction form
    81,640.13/122,507.46 = 34,251/x
  3. Step 3: Cross multiply
    81,640.13x = 122,507.46 × 34,251
  4. Step 4: Simplify right side
    81,640.13x = 4,196,003,012.46
  5. Step 5: Solve for x
    x = 4,196,003,012.46/81,640.13
  6. Step 6: Final answer
    x = 51,396.33

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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.