Home / 54,451.67-81,698.63-21,195.09

Finding the Fourth Proportional to 54,451.67, 81,698.63 and 21,195.09

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Solution

The fourth proportional to 54,451.67, 81,698.63 and 21,195.09 is: 31,800.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,451.67 : 81,698.63 = 21,195.09 : x
  2. Step 2: Convert to fraction form
    54,451.67/81,698.63 = 21,195.09/x
  3. Step 3: Cross multiply
    54,451.67x = 81,698.63 × 21,195.09
  4. Step 4: Simplify right side
    54,451.67x = 1,731,609,709.75
  5. Step 5: Solve for x
    x = 1,731,609,709.75/54,451.67
  6. Step 6: Final answer
    x = 31,800.86

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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.