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Finding the Fourth Proportional to 66,936, 92,376 and 37,128

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Solution

The fourth proportional to 66,936, 92,376 and 37,128 is: 51,239.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,936 : 92,376 = 37,128 : x
  2. Step 2: Convert to fraction form
    66,936/92,376 = 37,128/x
  3. Step 3: Cross multiply
    66,936x = 92,376 × 37,128
  4. Step 4: Simplify right side
    66,936x = 3,429,736,128
  5. Step 5: Solve for x
    x = 3,429,736,128/66,936
  6. Step 6: Final answer
    x = 51,239.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.