Home / 68,945.56-103,322.66-31,413.90

Finding the Fourth Proportional to 68,945.56, 103,322.66 and 31,413.90

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Solution

The fourth proportional to 68,945.56, 103,322.66 and 31,413.90 is: 47,077.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,945.56 : 103,322.66 = 31,413.90 : x
  2. Step 2: Convert to fraction form
    68,945.56/103,322.66 = 31,413.90/x
  3. Step 3: Cross multiply
    68,945.56x = 103,322.66 × 31,413.90
  4. Step 4: Simplify right side
    68,945.56x = 3,245,767,939.36
  5. Step 5: Solve for x
    x = 3,245,767,939.36/68,945.56
  6. Step 6: Final answer
    x = 47,077.26

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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.