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Finding the Fourth Proportional to 66,663.60, 91,997.10 and 36,450.81

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Solution

The fourth proportional to 66,663.60, 91,997.10 and 36,450.81 is: 50,302.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,663.60 : 91,997.10 = 36,450.81 : x
  2. Step 2: Convert to fraction form
    66,663.60/91,997.10 = 36,450.81/x
  3. Step 3: Cross multiply
    66,663.60x = 91,997.10 × 36,450.81
  4. Step 4: Simplify right side
    66,663.60x = 3,353,368,170.41
  5. Step 5: Solve for x
    x = 3,353,368,170.41/66,663.60
  6. Step 6: Final answer
    x = 50,302.84

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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.