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Finding the Fourth Proportional to 85,668.44, 118,284.81 and 68,765.66

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Solution

The fourth proportional to 85,668.44, 118,284.81 and 68,765.66 is: 94,946.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,668.44 : 118,284.81 = 68,765.66 : x
  2. Step 2: Convert to fraction form
    85,668.44/118,284.81 = 68,765.66/x
  3. Step 3: Cross multiply
    85,668.44x = 118,284.81 × 68,765.66
  4. Step 4: Simplify right side
    85,668.44x = 8,133,932,621.90
  5. Step 5: Solve for x
    x = 8,133,932,621.90/85,668.44
  6. Step 6: Final answer
    x = 94,946.67

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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.