Home / 81,930.31-113,062.57-46,120.21

Finding the Fourth Proportional to 81,930.31, 113,062.57 and 46,120.21

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Solution

The fourth proportional to 81,930.31, 113,062.57 and 46,120.21 is: 63,645.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,930.31 : 113,062.57 = 46,120.21 : x
  2. Step 2: Convert to fraction form
    81,930.31/113,062.57 = 46,120.21/x
  3. Step 3: Cross multiply
    81,930.31x = 113,062.57 × 46,120.21
  4. Step 4: Simplify right side
    81,930.31x = 5,214,469,471.54
  5. Step 5: Solve for x
    x = 5,214,469,471.54/81,930.31
  6. Step 6: Final answer
    x = 63,645.18

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1.5x scale

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.