Home / 54,434.36-81,630.55-21,150.04

Finding the Fourth Proportional to 54,434.36, 81,630.55 and 21,150.04

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Solution

The fourth proportional to 54,434.36, 81,630.55 and 21,150.04 is: 31,716.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,434.36 : 81,630.55 = 21,150.04 : x
  2. Step 2: Convert to fraction form
    54,434.36/81,630.55 = 21,150.04/x
  3. Step 3: Cross multiply
    54,434.36x = 81,630.55 × 21,150.04
  4. Step 4: Simplify right side
    54,434.36x = 1,726,489,548.92
  5. Step 5: Solve for x
    x = 1,726,489,548.92/54,434.36
  6. Step 6: Final answer
    x = 31,716.91

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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.