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Finding the Fourth Proportional to 66,620.73, 91,933.86 and 36,407.10

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Solution

The fourth proportional to 66,620.73, 91,933.86 and 36,407.10 is: 50,240.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,620.73 : 91,933.86 = 36,407.10 : x
  2. Step 2: Convert to fraction form
    66,620.73/91,933.86 = 36,407.10/x
  3. Step 3: Cross multiply
    66,620.73x = 91,933.86 × 36,407.10
  4. Step 4: Simplify right side
    66,620.73x = 3,347,045,234.41
  5. Step 5: Solve for x
    x = 3,347,045,234.41/66,620.73
  6. Step 6: Final answer
    x = 50,240.30

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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.