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Finding the Fourth Proportional to 85,759.63, 118,351.95 and 49,943.86

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Solution

The fourth proportional to 85,759.63, 118,351.95 and 49,943.86 is: 68,924.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,759.63 : 118,351.95 = 49,943.86 : x
  2. Step 2: Convert to fraction form
    85,759.63/118,351.95 = 49,943.86/x
  3. Step 3: Cross multiply
    85,759.63x = 118,351.95 × 49,943.86
  4. Step 4: Simplify right side
    85,759.63x = 5,910,953,221.53
  5. Step 5: Solve for x
    x = 5,910,953,221.53/85,759.63
  6. Step 6: Final answer
    x = 68,924.66

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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.