Finding the Fourth Proportional to 77,651.30, 107,029.74 and 54,961.18
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Solution
The fourth proportional to 77,651.30, 107,029.74 and 54,961.18 is: 75,755.07
Step by Step Solution
- Step 1: Write the proportion equation
77,651.30 : 107,029.74 = 54,961.18 : x - Step 2: Convert to fraction form
77,651.30/107,029.74 = 54,961.18/x - Step 3: Cross multiply
77,651.30x = 107,029.74 × 54,961.18 - Step 4: Simplify right side
77,651.30x = 5,882,479,995.54 - Step 5: Solve for x
x = 5,882,479,995.54/77,651.30 - Step 6: Final answer
x = 75,755.07
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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.