Finding the Fourth Proportional to 81,413.81, 121,940.29 and 62,555.03
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Solution
The fourth proportional to 81,413.81, 121,940.29 and 62,555.03 is: 93,693.92
Step by Step Solution
- Step 1: Write the proportion equation
81,413.81 : 121,940.29 = 62,555.03 : x - Step 2: Convert to fraction form
81,413.81/121,940.29 = 62,555.03/x - Step 3: Cross multiply
81,413.81x = 121,940.29 × 62,555.03 - Step 4: Simplify right side
81,413.81x = 7,627,978,758.97 - Step 5: Solve for x
x = 7,627,978,758.97/81,413.81 - Step 6: Final answer
x = 93,693.92
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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.