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Finding the Fourth Proportional to 66,597.75, 91,904.90 and 36,789.75

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Solution

The fourth proportional to 66,597.75, 91,904.90 and 36,789.75 is: 50,769.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,597.75 : 91,904.90 = 36,789.75 : x
  2. Step 2: Convert to fraction form
    66,597.75/91,904.90 = 36,789.75/x
  3. Step 3: Cross multiply
    66,597.75x = 91,904.90 × 36,789.75
  4. Step 4: Simplify right side
    66,597.75x = 3,381,158,110.83
  5. Step 5: Solve for x
    x = 3,381,158,110.83/66,597.75
  6. Step 6: Final answer
    x = 50,769.86

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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.