Home / 54,147.45-81,235.03-20,858.58

Finding the Fourth Proportional to 54,147.45, 81,235.03 and 20,858.58

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Solution

The fourth proportional to 54,147.45, 81,235.03 and 20,858.58 is: 31,293.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,147.45 : 81,235.03 = 20,858.58 : x
  2. Step 2: Convert to fraction form
    54,147.45/81,235.03 = 20,858.58/x
  3. Step 3: Cross multiply
    54,147.45x = 81,235.03 × 20,858.58
  4. Step 4: Simplify right side
    54,147.45x = 1,694,446,861.59
  5. Step 5: Solve for x
    x = 1,694,446,861.59/54,147.45
  6. Step 6: Final answer
    x = 31,293.20

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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.