Home / 80,774.15-121,161.20-21,608.29

Finding the Fourth Proportional to 80,774.15, 121,161.20 and 21,608.29

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Solution

The fourth proportional to 80,774.15, 121,161.20 and 21,608.29 is: 32,412.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,774.15 : 121,161.20 = 21,608.29 : x
  2. Step 2: Convert to fraction form
    80,774.15/121,161.20 = 21,608.29/x
  3. Step 3: Cross multiply
    80,774.15x = 121,161.20 × 21,608.29
  4. Step 4: Simplify right side
    80,774.15x = 2,618,085,935.40
  5. Step 5: Solve for x
    x = 2,618,085,935.40/80,774.15
  6. Step 6: Final answer
    x = 32,412.42

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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.