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Finding the Fourth Proportional to 66,485.20, 99,706.20 and 22,104.40

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Solution

The fourth proportional to 66,485.20, 99,706.20 and 22,104.40 is: 33,149.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,485.20 : 99,706.20 = 22,104.40 : x
  2. Step 2: Convert to fraction form
    66,485.20/99,706.20 = 22,104.40/x
  3. Step 3: Cross multiply
    66,485.20x = 99,706.20 × 22,104.40
  4. Step 4: Simplify right side
    66,485.20x = 2,203,945,727.28
  5. Step 5: Solve for x
    x = 2,203,945,727.28/66,485.20
  6. Step 6: Final answer
    x = 33,149.42

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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.