Home / 80,759.84-121,131.24-21,601.48

Finding the Fourth Proportional to 80,759.84, 121,131.24 and 21,601.48

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Solution

The fourth proportional to 80,759.84, 121,131.24 and 21,601.48 is: 32,399.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,759.84 : 121,131.24 = 21,601.48 : x
  2. Step 2: Convert to fraction form
    80,759.84/121,131.24 = 21,601.48/x
  3. Step 3: Cross multiply
    80,759.84x = 121,131.24 × 21,601.48
  4. Step 4: Simplify right side
    80,759.84x = 2,616,614,058.24
  5. Step 5: Solve for x
    x = 2,616,614,058.24/80,759.84
  6. Step 6: Final answer
    x = 32,399.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.