Home / 80,665.36-120,995.28-30,743.64

Finding the Fourth Proportional to 80,665.36, 120,995.28 and 30,743.64

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Solution

The fourth proportional to 80,665.36, 120,995.28 and 30,743.64 is: 46,114.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,665.36 : 120,995.28 = 30,743.64 : x
  2. Step 2: Convert to fraction form
    80,665.36/120,995.28 = 30,743.64/x
  3. Step 3: Cross multiply
    80,665.36x = 120,995.28 × 30,743.64
  4. Step 4: Simplify right side
    80,665.36x = 3,719,835,330.02
  5. Step 5: Solve for x
    x = 3,719,835,330.02/80,665.36
  6. Step 6: Final answer
    x = 46,114.41

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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.