Home / 80,021.57-120,107.69-40,606.97

Finding the Fourth Proportional to 80,021.57, 120,107.69 and 40,606.97

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Solution

The fourth proportional to 80,021.57, 120,107.69 and 40,606.97 is: 60,948.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,021.57 : 120,107.69 = 40,606.97 : x
  2. Step 2: Convert to fraction form
    80,021.57/120,107.69 = 40,606.97/x
  3. Step 3: Cross multiply
    80,021.57x = 120,107.69 × 40,606.97
  4. Step 4: Simplify right side
    80,021.57x = 4,877,209,161.56
  5. Step 5: Solve for x
    x = 4,877,209,161.56/80,021.57
  6. Step 6: Final answer
    x = 60,948.68

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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.