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Finding the Fourth Proportional to 80,477.45, 120,716.12 and 33,118.32

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Solution

The fourth proportional to 80,477.45, 120,716.12 and 33,118.32 is: 49,677.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,477.45 : 120,716.12 = 33,118.32 : x
  2. Step 2: Convert to fraction form
    80,477.45/120,716.12 = 33,118.32/x
  3. Step 3: Cross multiply
    80,477.45x = 120,716.12 × 33,118.32
  4. Step 4: Simplify right side
    80,477.45x = 3,997,914,947.77
  5. Step 5: Solve for x
    x = 3,997,914,947.77/80,477.45
  6. Step 6: Final answer
    x = 49,677.46

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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.