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Finding the Fourth Proportional to 66,820.52, 92,212.05 and 36,605.80

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Solution

The fourth proportional to 66,820.52, 92,212.05 and 36,605.80 is: 50,515.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,820.52 : 92,212.05 = 36,605.80 : x
  2. Step 2: Convert to fraction form
    66,820.52/92,212.05 = 36,605.80/x
  3. Step 3: Cross multiply
    66,820.52x = 92,212.05 × 36,605.80
  4. Step 4: Simplify right side
    66,820.52x = 3,375,495,859.89
  5. Step 5: Solve for x
    x = 3,375,495,859.89/66,820.52
  6. Step 6: Final answer
    x = 50,515.86

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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.