Home / 81,649.11-122,481.42-31,733.07

Finding the Fourth Proportional to 81,649.11, 122,481.42 and 31,733.07

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Solution

The fourth proportional to 81,649.11, 122,481.42 and 31,733.07 is: 47,602.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,649.11 : 122,481.42 = 31,733.07 : x
  2. Step 2: Convert to fraction form
    81,649.11/122,481.42 = 31,733.07/x
  3. Step 3: Cross multiply
    81,649.11x = 122,481.42 × 31,733.07
  4. Step 4: Simplify right side
    81,649.11x = 3,886,710,896.26
  5. Step 5: Solve for x
    x = 3,886,710,896.26/81,649.11
  6. Step 6: Final answer
    x = 47,602.61

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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.