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Finding the Fourth Proportional to 66,000.38, 91,074.89 and 37,318.64

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Solution

The fourth proportional to 66,000.38, 91,074.89 and 37,318.64 is: 51,496.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,000.38 : 91,074.89 = 37,318.64 : x
  2. Step 2: Convert to fraction form
    66,000.38/91,074.89 = 37,318.64/x
  3. Step 3: Cross multiply
    66,000.38x = 91,074.89 × 37,318.64
  4. Step 4: Simplify right side
    66,000.38x = 3,398,790,670.87
  5. Step 5: Solve for x
    x = 3,398,790,670.87/66,000.38
  6. Step 6: Final answer
    x = 51,496.53

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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.