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Finding the Fourth Proportional to 66,157.75, 91,297.70 and 36,349.75

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Solution

The fourth proportional to 66,157.75, 91,297.70 and 36,349.75 is: 50,162.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,157.75 : 91,297.70 = 36,349.75 : x
  2. Step 2: Convert to fraction form
    66,157.75/91,297.70 = 36,349.75/x
  3. Step 3: Cross multiply
    66,157.75x = 91,297.70 × 36,349.75
  4. Step 4: Simplify right side
    66,157.75x = 3,318,648,570.58
  5. Step 5: Solve for x
    x = 3,318,648,570.58/66,157.75
  6. Step 6: Final answer
    x = 50,162.66

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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.