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Finding the Fourth Proportional to 66,915.51, 92,344.62 and 36,699

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Solution

The fourth proportional to 66,915.51, 92,344.62 and 36,699 is: 50,645.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,915.51 : 92,344.62 = 36,699 : x
  2. Step 2: Convert to fraction form
    66,915.51/92,344.62 = 36,699/x
  3. Step 3: Cross multiply
    66,915.51x = 92,344.62 × 36,699
  4. Step 4: Simplify right side
    66,915.51x = 3,388,955,209.38
  5. Step 5: Solve for x
    x = 3,388,955,209.38/66,915.51
  6. Step 6: Final answer
    x = 50,645.29

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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.