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Finding the Fourth Proportional to 55,747, 76,940.58 and 31,874.68

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Solution

The fourth proportional to 55,747, 76,940.58 and 31,874.68 is: 43,992.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,747 : 76,940.58 = 31,874.68 : x
  2. Step 2: Convert to fraction form
    55,747/76,940.58 = 31,874.68/x
  3. Step 3: Cross multiply
    55,747x = 76,940.58 × 31,874.68
  4. Step 4: Simplify right side
    55,747x = 2,452,456,366.51
  5. Step 5: Solve for x
    x = 2,452,456,366.51/55,747
  6. Step 6: Final answer
    x = 43,992.62

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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.