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Finding the Fourth Proportional to 66,812.68, 100,221.45 and 22,440.88

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Solution

The fourth proportional to 66,812.68, 100,221.45 and 22,440.88 is: 33,662.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,812.68 : 100,221.45 = 22,440.88 : x
  2. Step 2: Convert to fraction form
    66,812.68/100,221.45 = 22,440.88/x
  3. Step 3: Cross multiply
    66,812.68x = 100,221.45 × 22,440.88
  4. Step 4: Simplify right side
    66,812.68x = 2,249,057,532.88
  5. Step 5: Solve for x
    x = 2,249,057,532.88/66,812.68
  6. Step 6: Final answer
    x = 33,662.14

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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.