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Finding the Fourth Proportional to 66,748.79, 100,090.78 and 25,199.03

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Solution

The fourth proportional to 66,748.79, 100,090.78 and 25,199.03 is: 37,786.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,748.79 : 100,090.78 = 25,199.03 : x
  2. Step 2: Convert to fraction form
    66,748.79/100,090.78 = 25,199.03/x
  3. Step 3: Cross multiply
    66,748.79x = 100,090.78 × 25,199.03
  4. Step 4: Simplify right side
    66,748.79x = 2,522,190,567.94
  5. Step 5: Solve for x
    x = 2,522,190,567.94/66,748.79
  6. Step 6: Final answer
    x = 37,786.31

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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.