Home / 76,945.44-105,947.85-65,589.48

Finding the Fourth Proportional to 76,945.44, 105,947.85 and 65,589.48

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Solution

The fourth proportional to 76,945.44, 105,947.85 and 65,589.48 is: 90,311.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,945.44 : 105,947.85 = 65,589.48 : x
  2. Step 2: Convert to fraction form
    76,945.44/105,947.85 = 65,589.48/x
  3. Step 3: Cross multiply
    76,945.44x = 105,947.85 × 65,589.48
  4. Step 4: Simplify right side
    76,945.44x = 6,949,064,388.62
  5. Step 5: Solve for x
    x = 6,949,064,388.62/76,945.44
  6. Step 6: Final answer
    x = 90,311.58

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1.5x scale

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.