Home / 80,939.52-121,410.45-31,022.16

Finding the Fourth Proportional to 80,939.52, 121,410.45 and 31,022.16

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Solution

The fourth proportional to 80,939.52, 121,410.45 and 31,022.16 is: 46,533.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,939.52 : 121,410.45 = 31,022.16 : x
  2. Step 2: Convert to fraction form
    80,939.52/121,410.45 = 31,022.16/x
  3. Step 3: Cross multiply
    80,939.52x = 121,410.45 × 31,022.16
  4. Step 4: Simplify right side
    80,939.52x = 3,766,414,405.57
  5. Step 5: Solve for x
    x = 3,766,414,405.57/80,939.52
  6. Step 6: Final answer
    x = 46,533.69

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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.