Home / 75,321.05-112,982.22-19,161.21

Finding the Fourth Proportional to 75,321.05, 112,982.22 and 19,161.21

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Solution

The fourth proportional to 75,321.05, 112,982.22 and 19,161.21 is: 28,741.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,321.05 : 112,982.22 = 19,161.21 : x
  2. Step 2: Convert to fraction form
    75,321.05/112,982.22 = 19,161.21/x
  3. Step 3: Cross multiply
    75,321.05x = 112,982.22 × 19,161.21
  4. Step 4: Simplify right side
    75,321.05x = 2,164,876,043.69
  5. Step 5: Solve for x
    x = 2,164,876,043.69/75,321.05
  6. Step 6: Final answer
    x = 28,741.98

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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.