Finding the Fourth Proportional to 77,802.78, 107,413.59 and 73,318.75
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Solution
The fourth proportional to 77,802.78, 107,413.59 and 73,318.75 is: 101,222.99
Step by Step Solution
- Step 1: Write the proportion equation
77,802.78 : 107,413.59 = 73,318.75 : x - Step 2: Convert to fraction form
77,802.78/107,413.59 = 73,318.75/x - Step 3: Cross multiply
77,802.78x = 107,413.59 × 73,318.75 - Step 4: Simplify right side
77,802.78x = 7,875,430,151.81 - Step 5: Solve for x
x = 7,875,430,151.81/77,802.78 - Step 6: Final answer
x = 101,222.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.