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Finding the Fourth Proportional to 85,751.29, 118,297.29 and 55,546.66

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Solution

The fourth proportional to 85,751.29, 118,297.29 and 55,546.66 is: 76,628.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,751.29 : 118,297.29 = 55,546.66 : x
  2. Step 2: Convert to fraction form
    85,751.29/118,297.29 = 55,546.66/x
  3. Step 3: Cross multiply
    85,751.29x = 118,297.29 × 55,546.66
  4. Step 4: Simplify right side
    85,751.29x = 6,571,019,346.55
  5. Step 5: Solve for x
    x = 6,571,019,346.55/85,751.29
  6. Step 6: Final answer
    x = 76,628.81

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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.