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Finding the Fourth Proportional to 66,859.89, 100,289.83 and 27,435.57

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Solution

The fourth proportional to 66,859.89, 100,289.83 and 27,435.57 is: 41,153.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,859.89 : 100,289.83 = 27,435.57 : x
  2. Step 2: Convert to fraction form
    66,859.89/100,289.83 = 27,435.57/x
  3. Step 3: Cross multiply
    66,859.89x = 100,289.83 × 27,435.57
  4. Step 4: Simplify right side
    66,859.89x = 2,751,508,651.25
  5. Step 5: Solve for x
    x = 2,751,508,651.25/66,859.89
  6. Step 6: Final answer
    x = 41,153.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.