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Finding the Fourth Proportional to 66,364.04, 91,581.09 and 36,149.01

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Solution

The fourth proportional to 66,364.04, 91,581.09 and 36,149.01 is: 49,884.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,364.04 : 91,581.09 = 36,149.01 : x
  2. Step 2: Convert to fraction form
    66,364.04/91,581.09 = 36,149.01/x
  3. Step 3: Cross multiply
    66,364.04x = 91,581.09 × 36,149.01
  4. Step 4: Simplify right side
    66,364.04x = 3,310,565,738.22
  5. Step 5: Solve for x
    x = 3,310,565,738.22/66,364.04
  6. Step 6: Final answer
    x = 49,884.94

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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.