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Finding the Fourth Proportional to 66,664.92, 91,997.64 and 36,449.76

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Solution

The fourth proportional to 66,664.92, 91,997.64 and 36,449.76 is: 50,300.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,664.92 : 91,997.64 = 36,449.76 : x
  2. Step 2: Convert to fraction form
    66,664.92/91,997.64 = 36,449.76/x
  3. Step 3: Cross multiply
    66,664.92x = 91,997.64 × 36,449.76
  4. Step 4: Simplify right side
    66,664.92x = 3,353,291,898.57
  5. Step 5: Solve for x
    x = 3,353,291,898.57/66,664.92
  6. Step 6: Final answer
    x = 50,300.70

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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.