Home / 80,950.96-121,415.50-21,790.18

Finding the Fourth Proportional to 80,950.96, 121,415.50 and 21,790.18

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Solution

The fourth proportional to 80,950.96, 121,415.50 and 21,790.18 is: 32,682.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,950.96 : 121,415.50 = 21,790.18 : x
  2. Step 2: Convert to fraction form
    80,950.96/121,415.50 = 21,790.18/x
  3. Step 3: Cross multiply
    80,950.96x = 121,415.50 × 21,790.18
  4. Step 4: Simplify right side
    80,950.96x = 2,645,665,778.80
  5. Step 5: Solve for x
    x = 2,645,665,778.80/80,950.96
  6. Step 6: Final answer
    x = 32,682.33

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1.5x scale

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.