Home / 78,183.48-117,204.13-40,699.51

Finding the Fourth Proportional to 78,183.48, 117,204.13 and 40,699.51

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Solution

The fourth proportional to 78,183.48, 117,204.13 and 40,699.51 is: 61,012.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,183.48 : 117,204.13 = 40,699.51 : x
  2. Step 2: Convert to fraction form
    78,183.48/117,204.13 = 40,699.51/x
  3. Step 3: Cross multiply
    78,183.48x = 117,204.13 × 40,699.51
  4. Step 4: Simplify right side
    78,183.48x = 4,770,150,660.98
  5. Step 5: Solve for x
    x = 4,770,150,660.98/78,183.48
  6. Step 6: Final answer
    x = 61,012.26

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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.