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Finding the Fourth Proportional to 66,919.67, 92,354.02 and 38,238.67

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Solution

The fourth proportional to 66,919.67, 92,354.02 and 38,238.67 is: 52,772.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,919.67 : 92,354.02 = 38,238.67 : x
  2. Step 2: Convert to fraction form
    66,919.67/92,354.02 = 38,238.67/x
  3. Step 3: Cross multiply
    66,919.67x = 92,354.02 × 38,238.67
  4. Step 4: Simplify right side
    66,919.67x = 3,531,494,567.47
  5. Step 5: Solve for x
    x = 3,531,494,567.47/66,919.67
  6. Step 6: Final answer
    x = 52,772.15

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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.