Home / 54,117.90-81,179.28-20,826.09

Finding the Fourth Proportional to 54,117.90, 81,179.28 and 20,826.09

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Solution

The fourth proportional to 54,117.90, 81,179.28 and 20,826.09 is: 31,240.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,117.90 : 81,179.28 = 20,826.09 : x
  2. Step 2: Convert to fraction form
    54,117.90/81,179.28 = 20,826.09/x
  3. Step 3: Cross multiply
    54,117.90x = 81,179.28 × 20,826.09
  4. Step 4: Simplify right side
    54,117.90x = 1,690,646,991.42
  5. Step 5: Solve for x
    x = 1,690,646,991.42/54,117.90
  6. Step 6: Final answer
    x = 31,240.07

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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.