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Finding the Fourth Proportional to 66,990.63, 92,446.68 and 36,776.46

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Solution

The fourth proportional to 66,990.63, 92,446.68 and 36,776.46 is: 50,751.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,990.63 : 92,446.68 = 36,776.46 : x
  2. Step 2: Convert to fraction form
    66,990.63/92,446.68 = 36,776.46/x
  3. Step 3: Cross multiply
    66,990.63x = 92,446.68 × 36,776.46
  4. Step 4: Simplify right side
    66,990.63x = 3,399,861,629.15
  5. Step 5: Solve for x
    x = 3,399,861,629.15/66,990.63
  6. Step 6: Final answer
    x = 50,751.30

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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.