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Finding the Fourth Proportional to 66,207.45, 91,366.87 and 35,992.83

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Solution

The fourth proportional to 66,207.45, 91,366.87 and 35,992.83 is: 49,670.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,207.45 : 91,366.87 = 35,992.83 : x
  2. Step 2: Convert to fraction form
    66,207.45/91,366.87 = 35,992.83/x
  3. Step 3: Cross multiply
    66,207.45x = 91,366.87 × 35,992.83
  4. Step 4: Simplify right side
    66,207.45x = 3,288,552,219.54
  5. Step 5: Solve for x
    x = 3,288,552,219.54/66,207.45
  6. Step 6: Final answer
    x = 49,670.43

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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.