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Finding the Fourth Proportional to 73,169.88, 100,973.80 and 39,635.88

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Solution

The fourth proportional to 73,169.88, 100,973.80 and 39,635.88 is: 54,697.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,169.88 : 100,973.80 = 39,635.88 : x
  2. Step 2: Convert to fraction form
    73,169.88/100,973.80 = 39,635.88/x
  3. Step 3: Cross multiply
    73,169.88x = 100,973.80 × 39,635.88
  4. Step 4: Simplify right side
    73,169.88x = 4,002,185,419.94
  5. Step 5: Solve for x
    x = 4,002,185,419.94/73,169.88
  6. Step 6: Final answer
    x = 54,697.17

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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.