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Finding the Fourth Proportional to 66,664.32, 91,996.81 and 36,449.70

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Solution

The fourth proportional to 66,664.32, 91,996.81 and 36,449.70 is: 50,300.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,664.32 : 91,996.81 = 36,449.70 : x
  2. Step 2: Convert to fraction form
    66,664.32/91,996.81 = 36,449.70/x
  3. Step 3: Cross multiply
    66,664.32x = 91,996.81 × 36,449.70
  4. Step 4: Simplify right side
    66,664.32x = 3,353,255,894.37
  5. Step 5: Solve for x
    x = 3,353,255,894.37/66,664.32
  6. Step 6: Final answer
    x = 50,300.61

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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.