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Finding the Fourth Proportional to 66,601.69, 91,915.40 and 37,930.64

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Solution

The fourth proportional to 66,601.69, 91,915.40 and 37,930.64 is: 52,347.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,601.69 : 91,915.40 = 37,930.64 : x
  2. Step 2: Convert to fraction form
    66,601.69/91,915.40 = 37,930.64/x
  3. Step 3: Cross multiply
    66,601.69x = 91,915.40 × 37,930.64
  4. Step 4: Simplify right side
    66,601.69x = 3,486,409,583.11
  5. Step 5: Solve for x
    x = 3,486,409,583.11/66,601.69
  6. Step 6: Final answer
    x = 52,347.17

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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.