Home / 81,814.19-122,722.80-25,653.04

Finding the Fourth Proportional to 81,814.19, 122,722.80 and 25,653.04

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Solution

The fourth proportional to 81,814.19, 122,722.80 and 25,653.04 is: 38,480.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,814.19 : 122,722.80 = 25,653.04 : x
  2. Step 2: Convert to fraction form
    81,814.19/122,722.80 = 25,653.04/x
  3. Step 3: Cross multiply
    81,814.19x = 122,722.80 × 25,653.04
  4. Step 4: Simplify right side
    81,814.19x = 3,148,212,494.31
  5. Step 5: Solve for x
    x = 3,148,212,494.31/81,814.19
  6. Step 6: Final answer
    x = 38,480.03

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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.