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Finding the Fourth Proportional to 66,673.60, 100,229.10 and 47,087.80

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Solution

The fourth proportional to 66,673.60, 100,229.10 and 47,087.80 is: 70,786.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,673.60 : 100,229.10 = 47,087.80 : x
  2. Step 2: Convert to fraction form
    66,673.60/100,229.10 = 47,087.80/x
  3. Step 3: Cross multiply
    66,673.60x = 100,229.10 × 47,087.80
  4. Step 4: Simplify right side
    66,673.60x = 4,719,567,814.98
  5. Step 5: Solve for x
    x = 4,719,567,814.98/66,673.60
  6. Step 6: Final answer
    x = 70,786.16

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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.