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Finding the Fourth Proportional to 80,011.80, 120,023.55 and 27,420.84

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Solution

The fourth proportional to 80,011.80, 120,023.55 and 27,420.84 is: 41,133.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,011.80 : 120,023.55 = 27,420.84 : x
  2. Step 2: Convert to fraction form
    80,011.80/120,023.55 = 27,420.84/x
  3. Step 3: Cross multiply
    80,011.80x = 120,023.55 × 27,420.84
  4. Step 4: Simplify right side
    80,011.80x = 3,291,146,560.78
  5. Step 5: Solve for x
    x = 3,291,146,560.78/80,011.80
  6. Step 6: Final answer
    x = 41,133.26

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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.