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Finding the Fourth Proportional to 80,518.36, 120,738.72 and 33,758.68

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Solution

The fourth proportional to 80,518.36, 120,738.72 and 33,758.68 is: 50,621.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,518.36 : 120,738.72 = 33,758.68 : x
  2. Step 2: Convert to fraction form
    80,518.36/120,738.72 = 33,758.68/x
  3. Step 3: Cross multiply
    80,518.36x = 120,738.72 × 33,758.68
  4. Step 4: Simplify right side
    80,518.36x = 4,075,979,812.09
  5. Step 5: Solve for x
    x = 4,075,979,812.09/80,518.36
  6. Step 6: Final answer
    x = 50,621.74

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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.