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Finding the Fourth Proportional to 71,943.87, 99,241.84 and 45,039.66

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Solution

The fourth proportional to 71,943.87, 99,241.84 and 45,039.66 is: 62,129.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,943.87 : 99,241.84 = 45,039.66 : x
  2. Step 2: Convert to fraction form
    71,943.87/99,241.84 = 45,039.66/x
  3. Step 3: Cross multiply
    71,943.87x = 99,241.84 × 45,039.66
  4. Step 4: Simplify right side
    71,943.87x = 4,469,818,731.37
  5. Step 5: Solve for x
    x = 4,469,818,731.37/71,943.87
  6. Step 6: Final answer
    x = 62,129.25

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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.