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Finding the Fourth Proportional to 66,943.40, 92,381.09 and 36,728.97

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Solution

The fourth proportional to 66,943.40, 92,381.09 and 36,728.97 is: 50,685.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,943.40 : 92,381.09 = 36,728.97 : x
  2. Step 2: Convert to fraction form
    66,943.40/92,381.09 = 36,728.97/x
  3. Step 3: Cross multiply
    66,943.40x = 92,381.09 × 36,728.97
  4. Step 4: Simplify right side
    66,943.40x = 3,393,062,099.53
  5. Step 5: Solve for x
    x = 3,393,062,099.53/66,943.40
  6. Step 6: Final answer
    x = 50,685.54

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1.5x scale

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.