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Finding the Fourth Proportional to 69,460.40, 104,190.60 and 66,544.40

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Solution

The fourth proportional to 69,460.40, 104,190.60 and 66,544.40 is: 99,816.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,460.40 : 104,190.60 = 66,544.40 : x
  2. Step 2: Convert to fraction form
    69,460.40/104,190.60 = 66,544.40/x
  3. Step 3: Cross multiply
    69,460.40x = 104,190.60 × 66,544.40
  4. Step 4: Simplify right side
    69,460.40x = 6,933,300,962.64
  5. Step 5: Solve for x
    x = 6,933,300,962.64/69,460.40
  6. Step 6: Final answer
    x = 99,816.60

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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.