Finding the Fourth Proportional to 89,698.80, 123,785.19 and 49,413.99
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Solution
The fourth proportional to 89,698.80, 123,785.19 and 49,413.99 is: 68,191.77
Step by Step Solution
- Step 1: Write the proportion equation
89,698.80 : 123,785.19 = 49,413.99 : x - Step 2: Convert to fraction form
89,698.80/123,785.19 = 49,413.99/x - Step 3: Cross multiply
89,698.80x = 123,785.19 × 49,413.99 - Step 4: Simplify right side
89,698.80x = 6,116,720,140.81 - Step 5: Solve for x
x = 6,116,720,140.81/89,698.80 - Step 6: Final answer
x = 68,191.77
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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.