Home / 54,187.06-81,218.22-20,890.48

Finding the Fourth Proportional to 54,187.06, 81,218.22 and 20,890.48

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Solution

The fourth proportional to 54,187.06, 81,218.22 and 20,890.48 is: 31,311.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,187.06 : 81,218.22 = 20,890.48 : x
  2. Step 2: Convert to fraction form
    54,187.06/81,218.22 = 20,890.48/x
  3. Step 3: Cross multiply
    54,187.06x = 81,218.22 × 20,890.48
  4. Step 4: Simplify right side
    54,187.06x = 1,696,687,600.55
  5. Step 5: Solve for x
    x = 1,696,687,600.55/54,187.06
  6. Step 6: Final answer
    x = 31,311.67

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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.