Home / 54,447.90-81,633.24-21,139.89

Finding the Fourth Proportional to 54,447.90, 81,633.24 and 21,139.89

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Solution

The fourth proportional to 54,447.90, 81,633.24 and 21,139.89 is: 31,694.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,447.90 : 81,633.24 = 21,139.89 : x
  2. Step 2: Convert to fraction form
    54,447.90/81,633.24 = 21,139.89/x
  3. Step 3: Cross multiply
    54,447.90x = 81,633.24 × 21,139.89
  4. Step 4: Simplify right side
    54,447.90x = 1,725,717,713.94
  5. Step 5: Solve for x
    x = 1,725,717,713.94/54,447.90
  6. Step 6: Final answer
    x = 31,694.84

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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.