Finding the Fourth Proportional to 96,991.63, 133,909.94 and 66,415.88
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Solution
The fourth proportional to 96,991.63, 133,909.94 and 66,415.88 is: 91,696.02
Step by Step Solution
- Step 1: Write the proportion equation
96,991.63 : 133,909.94 = 66,415.88 : x - Step 2: Convert to fraction form
96,991.63/133,909.94 = 66,415.88/x - Step 3: Cross multiply
96,991.63x = 133,909.94 × 66,415.88 - Step 4: Simplify right side
96,991.63x = 8,893,746,505.85 - Step 5: Solve for x
x = 8,893,746,505.85/96,991.63 - Step 6: Final answer
x = 91,696.02
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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.