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Finding the Fourth Proportional to 66,726, 92,081.88 and 36,918

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Solution

The fourth proportional to 66,726, 92,081.88 and 36,918 is: 50,946.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,726 : 92,081.88 = 36,918 : x
  2. Step 2: Convert to fraction form
    66,726/92,081.88 = 36,918/x
  3. Step 3: Cross multiply
    66,726x = 92,081.88 × 36,918
  4. Step 4: Simplify right side
    66,726x = 3,399,478,845.84
  5. Step 5: Solve for x
    x = 3,399,478,845.84/66,726
  6. Step 6: Final answer
    x = 50,946.84

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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.