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Finding the Fourth Proportional to 66,640.80, 99,946.80 and 29,200.80

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Solution

The fourth proportional to 66,640.80, 99,946.80 and 29,200.80 is: 43,794.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,640.80 : 99,946.80 = 29,200.80 : x
  2. Step 2: Convert to fraction form
    66,640.80/99,946.80 = 29,200.80/x
  3. Step 3: Cross multiply
    66,640.80x = 99,946.80 × 29,200.80
  4. Step 4: Simplify right side
    66,640.80x = 2,918,526,517.44
  5. Step 5: Solve for x
    x = 2,918,526,517.44/66,640.80
  6. Step 6: Final answer
    x = 43,794.89

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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.