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Finding the Fourth Proportional to 80,283.96, 120,425.94 and 27,689.34

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Solution

The fourth proportional to 80,283.96, 120,425.94 and 27,689.34 is: 41,534.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,283.96 : 120,425.94 = 27,689.34 : x
  2. Step 2: Convert to fraction form
    80,283.96/120,425.94 = 27,689.34/x
  3. Step 3: Cross multiply
    80,283.96x = 120,425.94 × 27,689.34
  4. Step 4: Simplify right side
    80,283.96x = 3,334,515,249.08
  5. Step 5: Solve for x
    x = 3,334,515,249.08/80,283.96
  6. Step 6: Final answer
    x = 41,534.02

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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.