Home / 81,310.38-121,964.86-63,555.97

Finding the Fourth Proportional to 81,310.38, 121,964.86 and 63,555.97

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Solution

The fourth proportional to 81,310.38, 121,964.86 and 63,555.97 is: 95,333.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,310.38 : 121,964.86 = 63,555.97 : x
  2. Step 2: Convert to fraction form
    81,310.38/121,964.86 = 63,555.97/x
  3. Step 3: Cross multiply
    81,310.38x = 121,964.86 × 63,555.97
  4. Step 4: Simplify right side
    81,310.38x = 7,751,594,983.21
  5. Step 5: Solve for x
    x = 7,751,594,983.21/81,310.38
  6. Step 6: Final answer
    x = 95,333.40

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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.