Home / 81,964.38-113,121.64-46,161.40

Finding the Fourth Proportional to 81,964.38, 113,121.64 and 46,161.40

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Solution

The fourth proportional to 81,964.38, 113,121.64 and 46,161.40 is: 63,708.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,964.38 : 113,121.64 = 46,161.40 : x
  2. Step 2: Convert to fraction form
    81,964.38/113,121.64 = 46,161.40/x
  3. Step 3: Cross multiply
    81,964.38x = 113,121.64 × 46,161.40
  4. Step 4: Simplify right side
    81,964.38x = 5,221,853,272.70
  5. Step 5: Solve for x
    x = 5,221,853,272.70/81,964.38
  6. Step 6: Final answer
    x = 63,708.81

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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.