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Finding the Fourth Proportional to 77,375.76, 106,787.36 and 43,393.36

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Solution

The fourth proportional to 77,375.76, 106,787.36 and 43,393.36 is: 59,887.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,375.76 : 106,787.36 = 43,393.36 : x
  2. Step 2: Convert to fraction form
    77,375.76/106,787.36 = 43,393.36/x
  3. Step 3: Cross multiply
    77,375.76x = 106,787.36 × 43,393.36
  4. Step 4: Simplify right side
    77,375.76x = 4,633,862,355.93
  5. Step 5: Solve for x
    x = 4,633,862,355.93/77,375.76
  6. Step 6: Final answer
    x = 59,887.78

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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.