Home / 68,910.78-102,947.46-43,749.36

Finding the Fourth Proportional to 68,910.78, 102,947.46 and 43,749.36

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Solution

The fourth proportional to 68,910.78, 102,947.46 and 43,749.36 is: 65,358.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,910.78 : 102,947.46 = 43,749.36 : x
  2. Step 2: Convert to fraction form
    68,910.78/102,947.46 = 43,749.36/x
  3. Step 3: Cross multiply
    68,910.78x = 102,947.46 × 43,749.36
  4. Step 4: Simplify right side
    68,910.78x = 4,503,885,488.63
  5. Step 5: Solve for x
    x = 4,503,885,488.63/68,910.78
  6. Step 6: Final answer
    x = 65,358.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.