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Finding the Fourth Proportional to 104,647.56, 156,882.86 and 45,438.44

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Solution

The fourth proportional to 104,647.56, 156,882.86 and 45,438.44 is: 68,119.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,647.56 : 156,882.86 = 45,438.44 : x
  2. Step 2: Convert to fraction form
    104,647.56/156,882.86 = 45,438.44/x
  3. Step 3: Cross multiply
    104,647.56x = 156,882.86 × 45,438.44
  4. Step 4: Simplify right side
    104,647.56x = 7,128,512,421.14
  5. Step 5: Solve for x
    x = 7,128,512,421.14/104,647.56
  6. Step 6: Final answer
    x = 68,119.24

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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.