Home / 80,934.09-121,455.67-28,344.03

Finding the Fourth Proportional to 80,934.09, 121,455.67 and 28,344.03

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Solution

The fourth proportional to 80,934.09, 121,455.67 and 28,344.03 is: 42,535.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,934.09 : 121,455.67 = 28,344.03 : x
  2. Step 2: Convert to fraction form
    80,934.09/121,455.67 = 28,344.03/x
  3. Step 3: Cross multiply
    80,934.09x = 121,455.67 × 28,344.03
  4. Step 4: Simplify right side
    80,934.09x = 3,442,542,546.87
  5. Step 5: Solve for x
    x = 3,442,542,546.87/80,934.09
  6. Step 6: Final answer
    x = 42,535.14

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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.