Home / 72,278.22-108,358.89-30,190.55

Finding the Fourth Proportional to 72,278.22, 108,358.89 and 30,190.55

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Solution

The fourth proportional to 72,278.22, 108,358.89 and 30,190.55 is: 45,261.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,278.22 : 108,358.89 = 30,190.55 : x
  2. Step 2: Convert to fraction form
    72,278.22/108,358.89 = 30,190.55/x
  3. Step 3: Cross multiply
    72,278.22x = 108,358.89 × 30,190.55
  4. Step 4: Simplify right side
    72,278.22x = 3,271,414,057.91
  5. Step 5: Solve for x
    x = 3,271,414,057.91/72,278.22
  6. Step 6: Final answer
    x = 45,261.41

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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.