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Finding the Fourth Proportional to 69,080.40, 103,620.60 and 61,563.60

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Solution

The fourth proportional to 69,080.40, 103,620.60 and 61,563.60 is: 92,345.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,080.40 : 103,620.60 = 61,563.60 : x
  2. Step 2: Convert to fraction form
    69,080.40/103,620.60 = 61,563.60/x
  3. Step 3: Cross multiply
    69,080.40x = 103,620.60 × 61,563.60
  4. Step 4: Simplify right side
    69,080.40x = 6,379,257,170.16
  5. Step 5: Solve for x
    x = 6,379,257,170.16/69,080.40
  6. Step 6: Final answer
    x = 92,345.40

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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.