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Finding the Fourth Proportional to 75,688.56, 113,536.44 and 28,945.44

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Solution

The fourth proportional to 75,688.56, 113,536.44 and 28,945.44 is: 43,419.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,688.56 : 113,536.44 = 28,945.44 : x
  2. Step 2: Convert to fraction form
    75,688.56/113,536.44 = 28,945.44/x
  3. Step 3: Cross multiply
    75,688.56x = 113,536.44 × 28,945.44
  4. Step 4: Simplify right side
    75,688.56x = 3,286,362,211.83
  5. Step 5: Solve for x
    x = 3,286,362,211.83/75,688.56
  6. Step 6: Final answer
    x = 43,419.54

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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.