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Finding the Fourth Proportional to 73,405.56, 101,299.77 and 39,871.56

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Solution

The fourth proportional to 73,405.56, 101,299.77 and 39,871.56 is: 55,022.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,405.56 : 101,299.77 = 39,871.56 : x
  2. Step 2: Convert to fraction form
    73,405.56/101,299.77 = 39,871.56/x
  3. Step 3: Cross multiply
    73,405.56x = 101,299.77 × 39,871.56
  4. Step 4: Simplify right side
    73,405.56x = 4,038,979,857.54
  5. Step 5: Solve for x
    x = 4,038,979,857.54/73,405.56
  6. Step 6: Final answer
    x = 55,022.81

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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.