Finding the Fourth Proportional to 76,139.36, 105,072.54 and 41,213.99
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Solution
The fourth proportional to 76,139.36, 105,072.54 and 41,213.99 is: 56,875.42
Step by Step Solution
- Step 1: Write the proportion equation
76,139.36 : 105,072.54 = 41,213.99 : x - Step 2: Convert to fraction form
76,139.36/105,072.54 = 41,213.99/x - Step 3: Cross multiply
76,139.36x = 105,072.54 × 41,213.99 - Step 4: Simplify right side
76,139.36x = 4,330,458,087.47 - Step 5: Solve for x
x = 4,330,458,087.47/76,139.36 - Step 6: Final answer
x = 56,875.42
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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.