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Finding the Fourth Proportional to 77,228.28, 115,859.40 and 43,963.92

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Solution

The fourth proportional to 77,228.28, 115,859.40 and 43,963.92 is: 65,955.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,228.28 : 115,859.40 = 43,963.92 : x
  2. Step 2: Convert to fraction form
    77,228.28/115,859.40 = 43,963.92/x
  3. Step 3: Cross multiply
    77,228.28x = 115,859.40 × 43,963.92
  4. Step 4: Simplify right side
    77,228.28x = 5,093,633,392.85
  5. Step 5: Solve for x
    x = 5,093,633,392.85/77,228.28
  6. Step 6: Final answer
    x = 65,955.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.