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Finding the Fourth Proportional to 66,953.78, 100,431.36 and 17,033.90

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Solution

The fourth proportional to 66,953.78, 100,431.36 and 17,033.90 is: 25,551.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,953.78 : 100,431.36 = 17,033.90 : x
  2. Step 2: Convert to fraction form
    66,953.78/100,431.36 = 17,033.90/x
  3. Step 3: Cross multiply
    66,953.78x = 100,431.36 × 17,033.90
  4. Step 4: Simplify right side
    66,953.78x = 1,710,737,743.10
  5. Step 5: Solve for x
    x = 1,710,737,743.10/66,953.78
  6. Step 6: Final answer
    x = 25,551.03

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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.