Home / 81,182.98-121,789.59-28,625.86

Finding the Fourth Proportional to 81,182.98, 121,789.59 and 28,625.86

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Solution

The fourth proportional to 81,182.98, 121,789.59 and 28,625.86 is: 42,944.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,182.98 : 121,789.59 = 28,625.86 : x
  2. Step 2: Convert to fraction form
    81,182.98/121,789.59 = 28,625.86/x
  3. Step 3: Cross multiply
    81,182.98x = 121,789.59 × 28,625.86
  4. Step 4: Simplify right side
    81,182.98x = 3,486,331,752.80
  5. Step 5: Solve for x
    x = 3,486,331,752.80/81,182.98
  6. Step 6: Final answer
    x = 42,944.12

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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.