Home / 80,321.22-110,856.33-76,777.74

Finding the Fourth Proportional to 80,321.22, 110,856.33 and 76,777.74

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Solution

The fourth proportional to 80,321.22, 110,856.33 and 76,777.74 is: 105,965.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,321.22 : 110,856.33 = 76,777.74 : x
  2. Step 2: Convert to fraction form
    80,321.22/110,856.33 = 76,777.74/x
  3. Step 3: Cross multiply
    80,321.22x = 110,856.33 × 76,777.74
  4. Step 4: Simplify right side
    80,321.22x = 8,511,298,482.09
  5. Step 5: Solve for x
    x = 8,511,298,482.09/80,321.22
  6. Step 6: Final answer
    x = 105,965.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.