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Finding the Fourth Proportional to 66,533.70, 91,816.74 and 36,319.69

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Solution

The fourth proportional to 66,533.70, 91,816.74 and 36,319.69 is: 50,121.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,533.70 : 91,816.74 = 36,319.69 : x
  2. Step 2: Convert to fraction form
    66,533.70/91,816.74 = 36,319.69/x
  3. Step 3: Cross multiply
    66,533.70x = 91,816.74 × 36,319.69
  4. Step 4: Simplify right side
    66,533.70x = 3,334,755,648.38
  5. Step 5: Solve for x
    x = 3,334,755,648.38/66,533.70
  6. Step 6: Final answer
    x = 50,121.30

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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.