Home / 80,564.22-120,722.13-43,129.26

Finding the Fourth Proportional to 80,564.22, 120,722.13 and 43,129.26

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Solution

The fourth proportional to 80,564.22, 120,722.13 and 43,129.26 is: 64,627.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,564.22 : 120,722.13 = 43,129.26 : x
  2. Step 2: Convert to fraction form
    80,564.22/120,722.13 = 43,129.26/x
  3. Step 3: Cross multiply
    80,564.22x = 120,722.13 × 43,129.26
  4. Step 4: Simplify right side
    80,564.22x = 5,206,656,132.52
  5. Step 5: Solve for x
    x = 5,206,656,132.52/80,564.22
  6. Step 6: Final answer
    x = 64,627.40

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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.