Home / 80,398.12-120,464.06-27,778.36

Finding the Fourth Proportional to 80,398.12, 120,464.06 and 27,778.36

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Solution

The fourth proportional to 80,398.12, 120,464.06 and 27,778.36 is: 41,621.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,398.12 : 120,464.06 = 27,778.36 : x
  2. Step 2: Convert to fraction form
    80,398.12/120,464.06 = 27,778.36/x
  3. Step 3: Cross multiply
    80,398.12x = 120,464.06 × 27,778.36
  4. Step 4: Simplify right side
    80,398.12x = 3,346,294,025.74
  5. Step 5: Solve for x
    x = 3,346,294,025.74/80,398.12
  6. Step 6: Final answer
    x = 41,621.55

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1.5x scale

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.