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Finding the Fourth Proportional to 68,260.40, 102,390.60 and 44,640.80

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Solution

The fourth proportional to 68,260.40, 102,390.60 and 44,640.80 is: 66,961.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,260.40 : 102,390.60 = 44,640.80 : x
  2. Step 2: Convert to fraction form
    68,260.40/102,390.60 = 44,640.80/x
  3. Step 3: Cross multiply
    68,260.40x = 102,390.60 × 44,640.80
  4. Step 4: Simplify right side
    68,260.40x = 4,570,798,296.48
  5. Step 5: Solve for x
    x = 4,570,798,296.48/68,260.40
  6. Step 6: Final answer
    x = 66,961.20

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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.