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Finding the Fourth Proportional to 66,756, 92,123.42 and 36,543.26

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Solution

The fourth proportional to 66,756, 92,123.42 and 36,543.26 is: 50,429.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,756 : 92,123.42 = 36,543.26 : x
  2. Step 2: Convert to fraction form
    66,756/92,123.42 = 36,543.26/x
  3. Step 3: Cross multiply
    66,756x = 92,123.42 × 36,543.26
  4. Step 4: Simplify right side
    66,756x = 3,366,490,089.15
  5. Step 5: Solve for x
    x = 3,366,490,089.15/66,756
  6. Step 6: Final answer
    x = 50,429.78

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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.