Home / 39,777.62-54,891.64-21,871.56

Finding the Fourth Proportional to 39,777.62, 54,891.64 and 21,871.56

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Solution

The fourth proportional to 39,777.62, 54,891.64 and 21,871.56 is: 30,181.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,777.62 : 54,891.64 = 21,871.56 : x
  2. Step 2: Convert to fraction form
    39,777.62/54,891.64 = 21,871.56/x
  3. Step 3: Cross multiply
    39,777.62x = 54,891.64 × 21,871.56
  4. Step 4: Simplify right side
    39,777.62x = 1,200,565,797.76
  5. Step 5: Solve for x
    x = 1,200,565,797.76/39,777.62
  6. Step 6: Final answer
    x = 30,181.94

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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.