Home / 43,680.05-65,550.36-19,990.49

Finding the Fourth Proportional to 43,680.05, 65,550.36 and 19,990.49

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Solution

The fourth proportional to 43,680.05, 65,550.36 and 19,990.49 is: 29,999.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,680.05 : 65,550.36 = 19,990.49 : x
  2. Step 2: Convert to fraction form
    43,680.05/65,550.36 = 19,990.49/x
  3. Step 3: Cross multiply
    43,680.05x = 65,550.36 × 19,990.49
  4. Step 4: Simplify right side
    43,680.05x = 1,310,383,488.32
  5. Step 5: Solve for x
    x = 1,310,383,488.32/43,680.05
  6. Step 6: Final answer
    x = 29,999.59

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1.5x scale

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.