Finding the Fourth Proportional to 115,274.16, 172,988.94 and 40,394.97
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Solution
The fourth proportional to 115,274.16, 172,988.94 and 40,394.97 is: 60,619.68
Step by Step Solution
- Step 1: Write the proportion equation
115,274.16 : 172,988.94 = 40,394.97 : x - Step 2: Convert to fraction form
115,274.16/172,988.94 = 40,394.97/x - Step 3: Cross multiply
115,274.16x = 172,988.94 × 40,394.97 - Step 4: Simplify right side
115,274.16x = 6,987,883,041.63 - Step 5: Solve for x
x = 6,987,883,041.63/115,274.16 - Step 6: Final answer
x = 60,619.68
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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.