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Finding the Fourth Proportional to 66,811.79, 100,226.90 and 22,451.22

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Solution

The fourth proportional to 66,811.79, 100,226.90 and 22,451.22 is: 33,679.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,811.79 : 100,226.90 = 22,451.22 : x
  2. Step 2: Convert to fraction form
    66,811.79/100,226.90 = 22,451.22/x
  3. Step 3: Cross multiply
    66,811.79x = 100,226.90 × 22,451.22
  4. Step 4: Simplify right side
    66,811.79x = 2,250,216,069.56
  5. Step 5: Solve for x
    x = 2,250,216,069.56/66,811.79
  6. Step 6: Final answer
    x = 33,679.93

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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.