Home / 81,080.20-121,328.70-54,836.20

Finding the Fourth Proportional to 81,080.20, 121,328.70 and 54,836.20

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Solution

The fourth proportional to 81,080.20, 121,328.70 and 54,836.20 is: 82,057.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,080.20 : 121,328.70 = 54,836.20 : x
  2. Step 2: Convert to fraction form
    81,080.20/121,328.70 = 54,836.20/x
  3. Step 3: Cross multiply
    81,080.20x = 121,328.70 × 54,836.20
  4. Step 4: Simplify right side
    81,080.20x = 6,653,204,858.94
  5. Step 5: Solve for x
    x = 6,653,204,858.94/81,080.20
  6. Step 6: Final answer
    x = 82,057.08

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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.