Home / 54,220.68-81,315.36-18,680.54

Finding the Fourth Proportional to 54,220.68, 81,315.36 and 18,680.54

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Solution

The fourth proportional to 54,220.68, 81,315.36 and 18,680.54 is: 28,015.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,220.68 : 81,315.36 = 18,680.54 : x
  2. Step 2: Convert to fraction form
    54,220.68/81,315.36 = 18,680.54/x
  3. Step 3: Cross multiply
    54,220.68x = 81,315.36 × 18,680.54
  4. Step 4: Simplify right side
    54,220.68x = 1,519,014,835.09
  5. Step 5: Solve for x
    x = 1,519,014,835.09/54,220.68
  6. Step 6: Final answer
    x = 28,015.41

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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.