Finding the Fourth Proportional to 99,778.77, 137,694.87 and 54,456.84
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Solution
The fourth proportional to 99,778.77, 137,694.87 and 54,456.84 is: 75,150.53
Step by Step Solution
- Step 1: Write the proportion equation
99,778.77 : 137,694.87 = 54,456.84 : x - Step 2: Convert to fraction form
99,778.77/137,694.87 = 54,456.84/x - Step 3: Cross multiply
99,778.77x = 137,694.87 × 54,456.84 - Step 4: Simplify right side
99,778.77x = 7,498,427,504.41 - Step 5: Solve for x
x = 7,498,427,504.41/99,778.77 - Step 6: Final answer
x = 75,150.53
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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.