Finding the Fourth Proportional to 88,072.29, 121,640.72 and 57,992.09
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Solution
The fourth proportional to 88,072.29, 121,640.72 and 57,992.09 is: 80,095.55
Step by Step Solution
- Step 1: Write the proportion equation
88,072.29 : 121,640.72 = 57,992.09 : x - Step 2: Convert to fraction form
88,072.29/121,640.72 = 57,992.09/x - Step 3: Cross multiply
88,072.29x = 121,640.72 × 57,992.09 - Step 4: Simplify right side
88,072.29x = 7,054,198,683.74 - Step 5: Solve for x
x = 7,054,198,683.74/88,072.29 - Step 6: Final answer
x = 80,095.55
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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.