Home / 39,687.19-54,769.33-21,782.04

Finding the Fourth Proportional to 39,687.19, 54,769.33 and 21,782.04

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Solution

The fourth proportional to 39,687.19, 54,769.33 and 21,782.04 is: 30,059.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,687.19 : 54,769.33 = 21,782.04 : x
  2. Step 2: Convert to fraction form
    39,687.19/54,769.33 = 21,782.04/x
  3. Step 3: Cross multiply
    39,687.19x = 54,769.33 × 21,782.04
  4. Step 4: Simplify right side
    39,687.19x = 1,192,987,736.83
  5. Step 5: Solve for x
    x = 1,192,987,736.83/39,687.19
  6. Step 6: Final answer
    x = 30,059.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.