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Finding the Fourth Proportional to 66,209.63, 91,369.29 and 36,401.63

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Solution

The fourth proportional to 66,209.63, 91,369.29 and 36,401.63 is: 50,234.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,209.63 : 91,369.29 = 36,401.63 : x
  2. Step 2: Convert to fraction form
    66,209.63/91,369.29 = 36,401.63/x
  3. Step 3: Cross multiply
    66,209.63x = 91,369.29 × 36,401.63
  4. Step 4: Simplify right side
    66,209.63x = 3,325,990,631.10
  5. Step 5: Solve for x
    x = 3,325,990,631.10/66,209.63
  6. Step 6: Final answer
    x = 50,234.25

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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.