Home / 80,364.33-120,554.60-21,204.09

Finding the Fourth Proportional to 80,364.33, 120,554.60 and 21,204.09

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Solution

The fourth proportional to 80,364.33, 120,554.60 and 21,204.09 is: 31,808.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,364.33 : 120,554.60 = 21,204.09 : x
  2. Step 2: Convert to fraction form
    80,364.33/120,554.60 = 21,204.09/x
  3. Step 3: Cross multiply
    80,364.33x = 120,554.60 × 21,204.09
  4. Step 4: Simplify right side
    80,364.33x = 2,556,250,588.31
  5. Step 5: Solve for x
    x = 2,556,250,588.31/80,364.33
  6. Step 6: Final answer
    x = 31,808.27

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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.