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Finding the Fourth Proportional to 80,492.78, 120,739.17 and 27,902.27

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Solution

The fourth proportional to 80,492.78, 120,739.17 and 27,902.27 is: 41,853.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,492.78 : 120,739.17 = 27,902.27 : x
  2. Step 2: Convert to fraction form
    80,492.78/120,739.17 = 27,902.27/x
  3. Step 3: Cross multiply
    80,492.78x = 120,739.17 × 27,902.27
  4. Step 4: Simplify right side
    80,492.78x = 3,368,896,317.22
  5. Step 5: Solve for x
    x = 3,368,896,317.22/80,492.78
  6. Step 6: Final answer
    x = 41,853.40

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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.