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Finding the Fourth Proportional to 61,990.31, 85,546.94 and 33,696

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Solution

The fourth proportional to 61,990.31, 85,546.94 and 33,696 is: 46,500.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,990.31 : 85,546.94 = 33,696 : x
  2. Step 2: Convert to fraction form
    61,990.31/85,546.94 = 33,696/x
  3. Step 3: Cross multiply
    61,990.31x = 85,546.94 × 33,696
  4. Step 4: Simplify right side
    61,990.31x = 2,882,589,521.76
  5. Step 5: Solve for x
    x = 2,882,589,521.76/61,990.31
  6. Step 6: Final answer
    x = 46,500.65

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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.