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Finding the Fourth Proportional to 66,765.79, 100,146.03 and 16,845.22

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Solution

The fourth proportional to 66,765.79, 100,146.03 and 16,845.22 is: 25,267.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,765.79 : 100,146.03 = 16,845.22 : x
  2. Step 2: Convert to fraction form
    66,765.79/100,146.03 = 16,845.22/x
  3. Step 3: Cross multiply
    66,765.79x = 100,146.03 × 16,845.22
  4. Step 4: Simplify right side
    66,765.79x = 1,686,981,907.48
  5. Step 5: Solve for x
    x = 1,686,981,907.48/66,765.79
  6. Step 6: Final answer
    x = 25,267.16

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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.