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Finding the Fourth Proportional to 80,484.95, 120,653.51 and 27,857.63

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Solution

The fourth proportional to 80,484.95, 120,653.51 and 27,857.63 is: 41,760.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,484.95 : 120,653.51 = 27,857.63 : x
  2. Step 2: Convert to fraction form
    80,484.95/120,653.51 = 27,857.63/x
  3. Step 3: Cross multiply
    80,484.95x = 120,653.51 × 27,857.63
  4. Step 4: Simplify right side
    80,484.95x = 3,361,121,211.06
  5. Step 5: Solve for x
    x = 3,361,121,211.06/80,484.95
  6. Step 6: Final answer
    x = 41,760.86

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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.