Home / 54,126.19-81,189.39-20,861.92

Finding the Fourth Proportional to 54,126.19, 81,189.39 and 20,861.92

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Solution

The fourth proportional to 54,126.19, 81,189.39 and 20,861.92 is: 31,292.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,126.19 : 81,189.39 = 20,861.92 : x
  2. Step 2: Convert to fraction form
    54,126.19/81,189.39 = 20,861.92/x
  3. Step 3: Cross multiply
    54,126.19x = 81,189.39 × 20,861.92
  4. Step 4: Simplify right side
    54,126.19x = 1,693,766,621.40
  5. Step 5: Solve for x
    x = 1,693,766,621.40/54,126.19
  6. Step 6: Final answer
    x = 31,292.92

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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.