Home / 81,947.89-113,061.66-49,695.43

Finding the Fourth Proportional to 81,947.89, 113,061.66 and 49,695.43

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Solution

The fourth proportional to 81,947.89, 113,061.66 and 49,695.43 is: 68,563.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,947.89 : 113,061.66 = 49,695.43 : x
  2. Step 2: Convert to fraction form
    81,947.89/113,061.66 = 49,695.43/x
  3. Step 3: Cross multiply
    81,947.89x = 113,061.66 × 49,695.43
  4. Step 4: Simplify right side
    81,947.89x = 5,618,647,810.21
  5. Step 5: Solve for x
    x = 5,618,647,810.21/81,947.89
  6. Step 6: Final answer
    x = 68,563.67

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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.