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Finding the Fourth Proportional to 80,611.62, 120,751.11 and 47,230.31

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Solution

The fourth proportional to 80,611.62, 120,751.11 and 47,230.31 is: 70,748.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,611.62 : 120,751.11 = 47,230.31 : x
  2. Step 2: Convert to fraction form
    80,611.62/120,751.11 = 47,230.31/x
  3. Step 3: Cross multiply
    80,611.62x = 120,751.11 × 47,230.31
  4. Step 4: Simplify right side
    80,611.62x = 5,703,111,754.39
  5. Step 5: Solve for x
    x = 5,703,111,754.39/80,611.62
  6. Step 6: Final answer
    x = 70,748.01

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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.