Home / 76,474.85-105,563.71-65,676.36

Finding the Fourth Proportional to 76,474.85, 105,563.71 and 65,676.36

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Solution

The fourth proportional to 76,474.85, 105,563.71 and 65,676.36 is: 90,657.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,474.85 : 105,563.71 = 65,676.36 : x
  2. Step 2: Convert to fraction form
    76,474.85/105,563.71 = 65,676.36/x
  3. Step 3: Cross multiply
    76,474.85x = 105,563.71 × 65,676.36
  4. Step 4: Simplify right side
    76,474.85x = 6,933,040,302.99
  5. Step 5: Solve for x
    x = 6,933,040,302.99/76,474.85
  6. Step 6: Final answer
    x = 90,657.78

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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.