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Finding the Fourth Proportional to 66,617.10, 91,930.10 and 36,402.57

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Solution

The fourth proportional to 66,617.10, 91,930.10 and 36,402.57 is: 50,234.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,617.10 : 91,930.10 = 36,402.57 : x
  2. Step 2: Convert to fraction form
    66,617.10/91,930.10 = 36,402.57/x
  3. Step 3: Cross multiply
    66,617.10x = 91,930.10 × 36,402.57
  4. Step 4: Simplify right side
    66,617.10x = 3,346,491,718.34
  5. Step 5: Solve for x
    x = 3,346,491,718.34/66,617.10
  6. Step 6: Final answer
    x = 50,234.73

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1.5x scale

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.