Home / 80,910.89-121,366.22-21,746.52

Finding the Fourth Proportional to 80,910.89, 121,366.22 and 21,746.52

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Solution

The fourth proportional to 80,910.89, 121,366.22 and 21,746.52 is: 32,619.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,910.89 : 121,366.22 = 21,746.52 : x
  2. Step 2: Convert to fraction form
    80,910.89/121,366.22 = 21,746.52/x
  3. Step 3: Cross multiply
    80,910.89x = 121,366.22 × 21,746.52
  4. Step 4: Simplify right side
    80,910.89x = 2,639,292,821.82
  5. Step 5: Solve for x
    x = 2,639,292,821.82/80,910.89
  6. Step 6: Final answer
    x = 32,619.75

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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.