Home / 80,776.54-121,163.07-21,612.21

Finding the Fourth Proportional to 80,776.54, 121,163.07 and 21,612.21

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Solution

The fourth proportional to 80,776.54, 121,163.07 and 21,612.21 is: 32,417.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,776.54 : 121,163.07 = 21,612.21 : x
  2. Step 2: Convert to fraction form
    80,776.54/121,163.07 = 21,612.21/x
  3. Step 3: Cross multiply
    80,776.54x = 121,163.07 × 21,612.21
  4. Step 4: Simplify right side
    80,776.54x = 2,618,601,107.27
  5. Step 5: Solve for x
    x = 2,618,601,107.27/80,776.54
  6. Step 6: Final answer
    x = 32,417.84

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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.