Home / 90,322.87-135,491.31-27,138.05

Finding the Fourth Proportional to 90,322.87, 135,491.31 and 27,138.05

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Solution

The fourth proportional to 90,322.87, 135,491.31 and 27,138.05 is: 40,709.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,322.87 : 135,491.31 = 27,138.05 : x
  2. Step 2: Convert to fraction form
    90,322.87/135,491.31 = 27,138.05/x
  3. Step 3: Cross multiply
    90,322.87x = 135,491.31 × 27,138.05
  4. Step 4: Simplify right side
    90,322.87x = 3,676,969,809.66
  5. Step 5: Solve for x
    x = 3,676,969,809.66/90,322.87
  6. Step 6: Final answer
    x = 40,709.18

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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.