Home / 80,759.58-121,130.87-21,601.23

Finding the Fourth Proportional to 80,759.58, 121,130.87 and 21,601.23

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Solution

The fourth proportional to 80,759.58, 121,130.87 and 21,601.23 is: 32,399.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,759.58 : 121,130.87 = 21,601.23 : x
  2. Step 2: Convert to fraction form
    80,759.58/121,130.87 = 21,601.23/x
  3. Step 3: Cross multiply
    80,759.58x = 121,130.87 × 21,601.23
  4. Step 4: Simplify right side
    80,759.58x = 2,616,575,674.96
  5. Step 5: Solve for x
    x = 2,616,575,674.96/80,759.58
  6. Step 6: Final answer
    x = 32,399.57

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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.