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Finding the Fourth Proportional to 66,613.48, 91,923.85 and 36,399.82

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Solution

The fourth proportional to 66,613.48, 91,923.85 and 36,399.82 is: 50,230.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,613.48 : 91,923.85 = 36,399.82 : x
  2. Step 2: Convert to fraction form
    66,613.48/91,923.85 = 36,399.82/x
  3. Step 3: Cross multiply
    66,613.48x = 91,923.85 × 36,399.82
  4. Step 4: Simplify right side
    66,613.48x = 3,346,011,593.71
  5. Step 5: Solve for x
    x = 3,346,011,593.71/66,613.48
  6. Step 6: Final answer
    x = 50,230.25

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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.