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Finding the Fourth Proportional to 84,954, 117,063.63 and 65,716.92

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Solution

The fourth proportional to 84,954, 117,063.63 and 65,716.92 is: 90,555.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,954 : 117,063.63 = 65,716.92 : x
  2. Step 2: Convert to fraction form
    84,954/117,063.63 = 65,716.92/x
  3. Step 3: Cross multiply
    84,954x = 117,063.63 × 65,716.92
  4. Step 4: Simplify right side
    84,954x = 7,693,061,207.62
  5. Step 5: Solve for x
    x = 7,693,061,207.62/84,954
  6. Step 6: Final answer
    x = 90,555.61

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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.