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Finding the Fourth Proportional to 55,668.52, 76,821.86 and 30,517.48

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Solution

The fourth proportional to 55,668.52, 76,821.86 and 30,517.48 is: 42,113.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,668.52 : 76,821.86 = 30,517.48 : x
  2. Step 2: Convert to fraction form
    55,668.52/76,821.86 = 30,517.48/x
  3. Step 3: Cross multiply
    55,668.52x = 76,821.86 × 30,517.48
  4. Step 4: Simplify right side
    55,668.52x = 2,344,409,576.11
  5. Step 5: Solve for x
    x = 2,344,409,576.11/55,668.52
  6. Step 6: Final answer
    x = 42,113.74

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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.