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Finding the Fourth Proportional to 73,654.88, 101,643.73 and 40,120.88

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Solution

The fourth proportional to 73,654.88, 101,643.73 and 40,120.88 is: 55,366.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,654.88 : 101,643.73 = 40,120.88 : x
  2. Step 2: Convert to fraction form
    73,654.88/101,643.73 = 40,120.88/x
  3. Step 3: Cross multiply
    73,654.88x = 101,643.73 × 40,120.88
  4. Step 4: Simplify right side
    73,654.88x = 4,078,035,285.56
  5. Step 5: Solve for x
    x = 4,078,035,285.56/73,654.88
  6. Step 6: Final answer
    x = 55,366.81

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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.