Home / 71,949.88-99,293.91-40,118.78

Finding the Fourth Proportional to 71,949.88, 99,293.91 and 40,118.78

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Solution

The fourth proportional to 71,949.88, 99,293.91 and 40,118.78 is: 55,365.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,949.88 : 99,293.91 = 40,118.78 : x
  2. Step 2: Convert to fraction form
    71,949.88/99,293.91 = 40,118.78/x
  3. Step 3: Cross multiply
    71,949.88x = 99,293.91 × 40,118.78
  4. Step 4: Simplify right side
    71,949.88x = 3,983,550,530.63
  5. Step 5: Solve for x
    x = 3,983,550,530.63/71,949.88
  6. Step 6: Final answer
    x = 55,365.63

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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.