Home / 80,679.04-120,759.72-43,145.26

Finding the Fourth Proportional to 80,679.04, 120,759.72 and 43,145.26

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Solution

The fourth proportional to 80,679.04, 120,759.72 and 43,145.26 is: 64,579.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,679.04 : 120,759.72 = 43,145.26 : x
  2. Step 2: Convert to fraction form
    80,679.04/120,759.72 = 43,145.26/x
  3. Step 3: Cross multiply
    80,679.04x = 120,759.72 × 43,145.26
  4. Step 4: Simplify right side
    80,679.04x = 5,210,209,516.93
  5. Step 5: Solve for x
    x = 5,210,209,516.93/80,679.04
  6. Step 6: Final answer
    x = 64,579.47

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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.