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Finding the Fourth Proportional to 111,939.78, 167,909.67 and 37,039.86

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Solution

The fourth proportional to 111,939.78, 167,909.67 and 37,039.86 is: 55,559.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,939.78 : 167,909.67 = 37,039.86 : x
  2. Step 2: Convert to fraction form
    111,939.78/167,909.67 = 37,039.86/x
  3. Step 3: Cross multiply
    111,939.78x = 167,909.67 × 37,039.86
  4. Step 4: Simplify right side
    111,939.78x = 6,219,350,669.45
  5. Step 5: Solve for x
    x = 6,219,350,669.45/111,939.78
  6. Step 6: Final answer
    x = 55,559.79

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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.