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Finding the Fourth Proportional to 85,757.63, 118,349.19 and 49,941.86

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Solution

The fourth proportional to 85,757.63, 118,349.19 and 49,941.86 is: 68,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,757.63 : 118,349.19 = 49,941.86 : x
  2. Step 2: Convert to fraction form
    85,757.63/118,349.19 = 49,941.86/x
  3. Step 3: Cross multiply
    85,757.63x = 118,349.19 × 49,941.86
  4. Step 4: Simplify right side
    85,757.63x = 5,910,578,086.35
  5. Step 5: Solve for x
    x = 5,910,578,086.35/85,757.63
  6. Step 6: Final answer
    x = 68,921.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.