Home / 66,738.85-100,078.76-19,983.01

Finding the Fourth Proportional to 66,738.85, 100,078.76 and 19,983.01

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Solution

The fourth proportional to 66,738.85, 100,078.76 and 19,983.01 is: 29,965.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,738.85 : 100,078.76 = 19,983.01 : x
  2. Step 2: Convert to fraction form
    66,738.85/100,078.76 = 19,983.01/x
  3. Step 3: Cross multiply
    66,738.85x = 100,078.76 × 19,983.01
  4. Step 4: Simplify right side
    66,738.85x = 1,999,874,761.95
  5. Step 5: Solve for x
    x = 1,999,874,761.95/66,738.85
  6. Step 6: Final answer
    x = 29,965.68

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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.