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Finding the Fourth Proportional to 67,019.40, 100,310.40 and 53,751.60

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Solution

The fourth proportional to 67,019.40, 100,310.40 and 53,751.60 is: 80,452.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,019.40 : 100,310.40 = 53,751.60 : x
  2. Step 2: Convert to fraction form
    67,019.40/100,310.40 = 53,751.60/x
  3. Step 3: Cross multiply
    67,019.40x = 100,310.40 × 53,751.60
  4. Step 4: Simplify right side
    67,019.40x = 5,391,844,496.64
  5. Step 5: Solve for x
    x = 5,391,844,496.64/67,019.40
  6. Step 6: Final answer
    x = 80,452.00

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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.