Home / 45,708.45-68,571.27-20,750.25

Finding the Fourth Proportional to 45,708.45, 68,571.27 and 20,750.25

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Solution

The fourth proportional to 45,708.45, 68,571.27 and 20,750.25 is: 31,129.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,708.45 : 68,571.27 = 20,750.25 : x
  2. Step 2: Convert to fraction form
    45,708.45/68,571.27 = 20,750.25/x
  3. Step 3: Cross multiply
    45,708.45x = 68,571.27 × 20,750.25
  4. Step 4: Simplify right side
    45,708.45x = 1,422,870,995.32
  5. Step 5: Solve for x
    x = 1,422,870,995.32/45,708.45
  6. Step 6: Final answer
    x = 31,129.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.