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Finding the Fourth Proportional to 73,963.80, 110,945.70 and 68,261.40

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Solution

The fourth proportional to 73,963.80, 110,945.70 and 68,261.40 is: 102,392.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,963.80 : 110,945.70 = 68,261.40 : x
  2. Step 2: Convert to fraction form
    73,963.80/110,945.70 = 68,261.40/x
  3. Step 3: Cross multiply
    73,963.80x = 110,945.70 × 68,261.40
  4. Step 4: Simplify right side
    73,963.80x = 7,573,308,805.98
  5. Step 5: Solve for x
    x = 7,573,308,805.98/73,963.80
  6. Step 6: Final answer
    x = 102,392.10

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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.