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Finding the Fourth Proportional to 73,179.88, 100,988.26 and 39,645.88

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Solution

The fourth proportional to 73,179.88, 100,988.26 and 39,645.88 is: 54,711.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,179.88 : 100,988.26 = 39,645.88 : x
  2. Step 2: Convert to fraction form
    73,179.88/100,988.26 = 39,645.88/x
  3. Step 3: Cross multiply
    73,179.88x = 100,988.26 × 39,645.88
  4. Step 4: Simplify right side
    73,179.88x = 4,003,768,437.37
  5. Step 5: Solve for x
    x = 4,003,768,437.37/73,179.88
  6. Step 6: Final answer
    x = 54,711.33

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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.