Home / 80,439.48-120,670.56-27,115.56

Finding the Fourth Proportional to 80,439.48, 120,670.56 and 27,115.56

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Solution

The fourth proportional to 80,439.48, 120,670.56 and 27,115.56 is: 40,677.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,439.48 : 120,670.56 = 27,115.56 : x
  2. Step 2: Convert to fraction form
    80,439.48/120,670.56 = 27,115.56/x
  3. Step 3: Cross multiply
    80,439.48x = 120,670.56 × 27,115.56
  4. Step 4: Simplify right side
    80,439.48x = 3,272,049,809.91
  5. Step 5: Solve for x
    x = 3,272,049,809.91/80,439.48
  6. Step 6: Final answer
    x = 40,677.16

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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.