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Finding the Fourth Proportional to 66,969.37, 100,467.87 and 21,994.12

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Solution

The fourth proportional to 66,969.37, 100,467.87 and 21,994.12 is: 32,995.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,969.37 : 100,467.87 = 21,994.12 : x
  2. Step 2: Convert to fraction form
    66,969.37/100,467.87 = 21,994.12/x
  3. Step 3: Cross multiply
    66,969.37x = 100,467.87 × 21,994.12
  4. Step 4: Simplify right side
    66,969.37x = 2,209,702,388.92
  5. Step 5: Solve for x
    x = 2,209,702,388.92/66,969.37
  6. Step 6: Final answer
    x = 32,995.72

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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.