Finding the Fourth Proportional to 76,068.82, 104,939.62 and 49,219.99
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Solution
The fourth proportional to 76,068.82, 104,939.62 and 49,219.99 is: 67,900.71
Step by Step Solution
- Step 1: Write the proportion equation
76,068.82 : 104,939.62 = 49,219.99 : x - Step 2: Convert to fraction form
76,068.82/104,939.62 = 49,219.99/x - Step 3: Cross multiply
76,068.82x = 104,939.62 × 49,219.99 - Step 4: Simplify right side
76,068.82x = 5,165,126,661.60 - Step 5: Solve for x
x = 5,165,126,661.60/76,068.82 - Step 6: Final answer
x = 67,900.71
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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.