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Finding the Fourth Proportional to 66,752, 100,128 and 17,504

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Solution

The fourth proportional to 66,752, 100,128 and 17,504 is: 26,256

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,752 : 100,128 = 17,504 : x
  2. Step 2: Convert to fraction form
    66,752/100,128 = 17,504/x
  3. Step 3: Cross multiply
    66,752x = 100,128 × 17,504
  4. Step 4: Simplify right side
    66,752x = 1,752,640,512
  5. Step 5: Solve for x
    x = 1,752,640,512/66,752
  6. Step 6: Final answer
    x = 26,256

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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.