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Finding the Fourth Proportional to 77,418.96, 106,839.30 and 43,434.96

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Solution

The fourth proportional to 77,418.96, 106,839.30 and 43,434.96 is: 59,940.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,418.96 : 106,839.30 = 43,434.96 : x
  2. Step 2: Convert to fraction form
    77,418.96/106,839.30 = 43,434.96/x
  3. Step 3: Cross multiply
    77,418.96x = 106,839.30 × 43,434.96
  4. Step 4: Simplify right side
    77,418.96x = 4,640,560,721.93
  5. Step 5: Solve for x
    x = 4,640,560,721.93/77,418.96
  6. Step 6: Final answer
    x = 59,940.88

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1.5x scale

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.