Home / 80,341.48-120,355.38-38,161.54

Finding the Fourth Proportional to 80,341.48, 120,355.38 and 38,161.54

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Solution

The fourth proportional to 80,341.48, 120,355.38 and 38,161.54 is: 57,167.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,341.48 : 120,355.38 = 38,161.54 : x
  2. Step 2: Convert to fraction form
    80,341.48/120,355.38 = 38,161.54/x
  3. Step 3: Cross multiply
    80,341.48x = 120,355.38 × 38,161.54
  4. Step 4: Simplify right side
    80,341.48x = 4,592,946,648.09
  5. Step 5: Solve for x
    x = 4,592,946,648.09/80,341.48
  6. Step 6: Final answer
    x = 57,167.81

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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.