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Finding the Fourth Proportional to 85,052.73, 117,393.60 and 65,894.61

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Solution

The fourth proportional to 85,052.73, 117,393.60 and 65,894.61 is: 90,950.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,052.73 : 117,393.60 = 65,894.61 : x
  2. Step 2: Convert to fraction form
    85,052.73/117,393.60 = 65,894.61/x
  3. Step 3: Cross multiply
    85,052.73x = 117,393.60 × 65,894.61
  4. Step 4: Simplify right side
    85,052.73x = 7,735,606,175.83
  5. Step 5: Solve for x
    x = 7,735,606,175.83/85,052.73
  6. Step 6: Final answer
    x = 90,950.71

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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.