Home / 81,100.44-121,631.22-27,786.24

Finding the Fourth Proportional to 81,100.44, 121,631.22 and 27,786.24

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Solution

The fourth proportional to 81,100.44, 121,631.22 and 27,786.24 is: 41,672.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,100.44 : 121,631.22 = 27,786.24 : x
  2. Step 2: Convert to fraction form
    81,100.44/121,631.22 = 27,786.24/x
  3. Step 3: Cross multiply
    81,100.44x = 121,631.22 × 27,786.24
  4. Step 4: Simplify right side
    81,100.44x = 3,379,674,270.41
  5. Step 5: Solve for x
    x = 3,379,674,270.41/81,100.44
  6. Step 6: Final answer
    x = 41,672.70

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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.