Home / 42,109.38-63,161.37-15,811.86

Finding the Fourth Proportional to 42,109.38, 63,161.37 and 15,811.86

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Solution

The fourth proportional to 42,109.38, 63,161.37 and 15,811.86 is: 23,716.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,109.38 : 63,161.37 = 15,811.86 : x
  2. Step 2: Convert to fraction form
    42,109.38/63,161.37 = 15,811.86/x
  3. Step 3: Cross multiply
    42,109.38x = 63,161.37 × 15,811.86
  4. Step 4: Simplify right side
    42,109.38x = 998,698,739.85
  5. Step 5: Solve for x
    x = 998,698,739.85/42,109.38
  6. Step 6: Final answer
    x = 23,716.78

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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.