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Finding the Fourth Proportional to 107,705.88, 161,556.53 and 28,820.12

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Solution

The fourth proportional to 107,705.88, 161,556.53 and 28,820.12 is: 43,229.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,705.88 : 161,556.53 = 28,820.12 : x
  2. Step 2: Convert to fraction form
    107,705.88/161,556.53 = 28,820.12/x
  3. Step 3: Cross multiply
    107,705.88x = 161,556.53 × 28,820.12
  4. Step 4: Simplify right side
    107,705.88x = 4,656,077,629.50
  5. Step 5: Solve for x
    x = 4,656,077,629.50/107,705.88
  6. Step 6: Final answer
    x = 43,229.56

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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.