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Finding the Fourth Proportional to 80,969.63, 111,733.02 and 45,161.96

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Solution

The fourth proportional to 80,969.63, 111,733.02 and 45,161.96 is: 62,320.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,969.63 : 111,733.02 = 45,161.96 : x
  2. Step 2: Convert to fraction form
    80,969.63/111,733.02 = 45,161.96/x
  3. Step 3: Cross multiply
    80,969.63x = 111,733.02 × 45,161.96
  4. Step 4: Simplify right side
    80,969.63x = 5,046,081,621.25
  5. Step 5: Solve for x
    x = 5,046,081,621.25/80,969.63
  6. Step 6: Final answer
    x = 62,320.67

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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.