Home / 76,727.44-105,912.66-56,745.15

Finding the Fourth Proportional to 76,727.44, 105,912.66 and 56,745.15

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Solution

The fourth proportional to 76,727.44, 105,912.66 and 56,745.15 is: 78,329.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,727.44 : 105,912.66 = 56,745.15 : x
  2. Step 2: Convert to fraction form
    76,727.44/105,912.66 = 56,745.15/x
  3. Step 3: Cross multiply
    76,727.44x = 105,912.66 × 56,745.15
  4. Step 4: Simplify right side
    76,727.44x = 6,010,029,778.60
  5. Step 5: Solve for x
    x = 6,010,029,778.60/76,727.44
  6. Step 6: Final answer
    x = 78,329.60

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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.