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Finding the Fourth Proportional to 85,991.63, 118,668.44 and 48,278.03

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Solution

The fourth proportional to 85,991.63, 118,668.44 and 48,278.03 is: 66,623.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,991.63 : 118,668.44 = 48,278.03 : x
  2. Step 2: Convert to fraction form
    85,991.63/118,668.44 = 48,278.03/x
  3. Step 3: Cross multiply
    85,991.63x = 118,668.44 × 48,278.03
  4. Step 4: Simplify right side
    85,991.63x = 5,729,078,033.73
  5. Step 5: Solve for x
    x = 5,729,078,033.73/85,991.63
  6. Step 6: Final answer
    x = 66,623.67

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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.