Home / 81,092.23-121,625.13-28,489.41

Finding the Fourth Proportional to 81,092.23, 121,625.13 and 28,489.41

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Solution

The fourth proportional to 81,092.23, 121,625.13 and 28,489.41 is: 42,729.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,092.23 : 121,625.13 = 28,489.41 : x
  2. Step 2: Convert to fraction form
    81,092.23/121,625.13 = 28,489.41/x
  3. Step 3: Cross multiply
    81,092.23x = 121,625.13 × 28,489.41
  4. Step 4: Simplify right side
    81,092.23x = 3,465,028,194.87
  5. Step 5: Solve for x
    x = 3,465,028,194.87/81,092.23
  6. Step 6: Final answer
    x = 42,729.47

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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.