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Finding the Fourth Proportional to 55,540, 76,646.82 and 30,391.12

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Solution

The fourth proportional to 55,540, 76,646.82 and 30,391.12 is: 41,940.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,540 : 76,646.82 = 30,391.12 : x
  2. Step 2: Convert to fraction form
    55,540/76,646.82 = 30,391.12/x
  3. Step 3: Cross multiply
    55,540x = 76,646.82 × 30,391.12
  4. Step 4: Simplify right side
    55,540x = 2,329,382,704.24
  5. Step 5: Solve for x
    x = 2,329,382,704.24/55,540
  6. Step 6: Final answer
    x = 41,940.63

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.