Home / 81,930.20-113,065.79-46,121.49

Finding the Fourth Proportional to 81,930.20, 113,065.79 and 46,121.49

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Solution

The fourth proportional to 81,930.20, 113,065.79 and 46,121.49 is: 63,648.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,930.20 : 113,065.79 = 46,121.49 : x
  2. Step 2: Convert to fraction form
    81,930.20/113,065.79 = 46,121.49/x
  3. Step 3: Cross multiply
    81,930.20x = 113,065.79 × 46,121.49
  4. Step 4: Simplify right side
    81,930.20x = 5,214,762,472.22
  5. Step 5: Solve for x
    x = 5,214,762,472.22/81,930.20
  6. Step 6: Final answer
    x = 63,648.85

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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.