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Finding the Fourth Proportional to 66,480.40, 99,696.30 and 22,108.60

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Solution

The fourth proportional to 66,480.40, 99,696.30 and 22,108.60 is: 33,154.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,480.40 : 99,696.30 = 22,108.60 : x
  2. Step 2: Convert to fraction form
    66,480.40/99,696.30 = 22,108.60/x
  3. Step 3: Cross multiply
    66,480.40x = 99,696.30 × 22,108.60
  4. Step 4: Simplify right side
    66,480.40x = 2,204,145,618.18
  5. Step 5: Solve for x
    x = 2,204,145,618.18/66,480.40
  6. Step 6: Final answer
    x = 33,154.82

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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.