Home / 39,680.72-54,759.23-21,776.02

Finding the Fourth Proportional to 39,680.72, 54,759.23 and 21,776.02

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Solution

The fourth proportional to 39,680.72, 54,759.23 and 21,776.02 is: 30,050.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,680.72 : 54,759.23 = 21,776.02 : x
  2. Step 2: Convert to fraction form
    39,680.72/54,759.23 = 21,776.02/x
  3. Step 3: Cross multiply
    39,680.72x = 54,759.23 × 21,776.02
  4. Step 4: Simplify right side
    39,680.72x = 1,192,437,923.55
  5. Step 5: Solve for x
    x = 1,192,437,923.55/39,680.72
  6. Step 6: Final answer
    x = 30,050.81

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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.