Home / 81,100.42-121,487.51-40,451.38

Finding the Fourth Proportional to 81,100.42, 121,487.51 and 40,451.38

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Solution

The fourth proportional to 81,100.42, 121,487.51 and 40,451.38 is: 60,595.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,100.42 : 121,487.51 = 40,451.38 : x
  2. Step 2: Convert to fraction form
    81,100.42/121,487.51 = 40,451.38/x
  3. Step 3: Cross multiply
    81,100.42x = 121,487.51 × 40,451.38
  4. Step 4: Simplify right side
    81,100.42x = 4,914,337,229.67
  5. Step 5: Solve for x
    x = 4,914,337,229.67/81,100.42
  6. Step 6: Final answer
    x = 60,595.71

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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.