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Finding the Fourth Proportional to 66,915.56, 92,336.82 and 38,630.36

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Solution

The fourth proportional to 66,915.56, 92,336.82 and 38,630.36 is: 53,306.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,915.56 : 92,336.82 = 38,630.36 : x
  2. Step 2: Convert to fraction form
    66,915.56/92,336.82 = 38,630.36/x
  3. Step 3: Cross multiply
    66,915.56x = 92,336.82 × 38,630.36
  4. Step 4: Simplify right side
    66,915.56x = 3,567,004,597.86
  5. Step 5: Solve for x
    x = 3,567,004,597.86/66,915.56
  6. Step 6: Final answer
    x = 53,306.06

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