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Finding the Fourth Proportional to 81,958.80, 113,101.92 and 46,148.72

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Solution

The fourth proportional to 81,958.80, 113,101.92 and 46,148.72 is: 63,684.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,958.80 : 113,101.92 = 46,148.72 : x
  2. Step 2: Convert to fraction form
    81,958.80/113,101.92 = 46,148.72/x
  3. Step 3: Cross multiply
    81,958.80x = 113,101.92 × 46,148.72
  4. Step 4: Simplify right side
    81,958.80x = 5,219,508,837.54
  5. Step 5: Solve for x
    x = 5,219,508,837.54/81,958.80
  6. Step 6: Final answer
    x = 63,684.54

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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.