Home / 51,822.32-77,738.34-20,660

Finding the Fourth Proportional to 51,822.32, 77,738.34 and 20,660

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Solution

The fourth proportional to 51,822.32, 77,738.34 and 20,660 is: 30,991.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,822.32 : 77,738.34 = 20,660 : x
  2. Step 2: Convert to fraction form
    51,822.32/77,738.34 = 20,660/x
  3. Step 3: Cross multiply
    51,822.32x = 77,738.34 × 20,660
  4. Step 4: Simplify right side
    51,822.32x = 1,606,074,104.40
  5. Step 5: Solve for x
    x = 1,606,074,104.40/51,822.32
  6. Step 6: Final answer
    x = 30,991.94

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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.