Home / 81,013.91-121,528.96-33,619.19

Finding the Fourth Proportional to 81,013.91, 121,528.96 and 33,619.19

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Solution

The fourth proportional to 81,013.91, 121,528.96 and 33,619.19 is: 50,432.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,013.91 : 121,528.96 = 33,619.19 : x
  2. Step 2: Convert to fraction form
    81,013.91/121,528.96 = 33,619.19/x
  3. Step 3: Cross multiply
    81,013.91x = 121,528.96 × 33,619.19
  4. Step 4: Simplify right side
    81,013.91x = 4,085,704,505.05
  5. Step 5: Solve for x
    x = 4,085,704,505.05/81,013.91
  6. Step 6: Final answer
    x = 50,432.14

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1.5x scale

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.