Home / 80,653.36-120,901.20-36,291.28

Finding the Fourth Proportional to 80,653.36, 120,901.20 and 36,291.28

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Solution

The fourth proportional to 80,653.36, 120,901.20 and 36,291.28 is: 54,401.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,653.36 : 120,901.20 = 36,291.28 : x
  2. Step 2: Convert to fraction form
    80,653.36/120,901.20 = 36,291.28/x
  3. Step 3: Cross multiply
    80,653.36x = 120,901.20 × 36,291.28
  4. Step 4: Simplify right side
    80,653.36x = 4,387,659,301.54
  5. Step 5: Solve for x
    x = 4,387,659,301.54/80,653.36
  6. Step 6: Final answer
    x = 54,401.44

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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.