Finding the Fourth Proportional to 68,661.93, 103,007.61 and 21,275.99
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Solution
The fourth proportional to 68,661.93, 103,007.61 and 21,275.99 is: 31,918.54
Step by Step Solution
- Step 1: Write the proportion equation
68,661.93 : 103,007.61 = 21,275.99 : x - Step 2: Convert to fraction form
68,661.93/103,007.61 = 21,275.99/x - Step 3: Cross multiply
68,661.93x = 103,007.61 × 21,275.99 - Step 4: Simplify right side
68,661.93x = 2,191,588,365.25 - Step 5: Solve for x
x = 2,191,588,365.25/68,661.93 - Step 6: Final answer
x = 31,918.54
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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.