Home / 80,278.03-120,491.77-40,864.64

Finding the Fourth Proportional to 80,278.03, 120,491.77 and 40,864.64

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Solution

The fourth proportional to 80,278.03, 120,491.77 and 40,864.64 is: 61,335.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,278.03 : 120,491.77 = 40,864.64 : x
  2. Step 2: Convert to fraction form
    80,278.03/120,491.77 = 40,864.64/x
  3. Step 3: Cross multiply
    80,278.03x = 120,491.77 × 40,864.64
  4. Step 4: Simplify right side
    80,278.03x = 4,923,853,003.08
  5. Step 5: Solve for x
    x = 4,923,853,003.08/80,278.03
  6. Step 6: Final answer
    x = 61,335.00

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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.