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Finding the Fourth Proportional to 81,672.96, 122,483.52 and 26,256

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Solution

The fourth proportional to 81,672.96, 122,483.52 and 26,256 is: 39,375.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,672.96 : 122,483.52 = 26,256 : x
  2. Step 2: Convert to fraction form
    81,672.96/122,483.52 = 26,256/x
  3. Step 3: Cross multiply
    81,672.96x = 122,483.52 × 26,256
  4. Step 4: Simplify right side
    81,672.96x = 3,215,927,301.12
  5. Step 5: Solve for x
    x = 3,215,927,301.12/81,672.96
  6. Step 6: Final answer
    x = 39,375.67

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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.