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Finding the Fourth Proportional to 80,402.34, 120,608.63 and 27,089.97

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Solution

The fourth proportional to 80,402.34, 120,608.63 and 27,089.97 is: 40,636.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,402.34 : 120,608.63 = 27,089.97 : x
  2. Step 2: Convert to fraction form
    80,402.34/120,608.63 = 27,089.97/x
  3. Step 3: Cross multiply
    80,402.34x = 120,608.63 × 27,089.97
  4. Step 4: Simplify right side
    80,402.34x = 3,267,284,032.99
  5. Step 5: Solve for x
    x = 3,267,284,032.99/80,402.34
  6. Step 6: Final answer
    x = 40,636.68

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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.