Finding the Fourth Proportional to 117,810.75, 162,578.84 and 64,818.75
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Solution
The fourth proportional to 117,810.75, 162,578.84 and 64,818.75 is: 89,449.88
Step by Step Solution
- Step 1: Write the proportion equation
117,810.75 : 162,578.84 = 64,818.75 : x - Step 2: Convert to fraction form
117,810.75/162,578.84 = 64,818.75/x - Step 3: Cross multiply
117,810.75x = 162,578.84 × 64,818.75 - Step 4: Simplify right side
117,810.75x = 10,538,157,185.25 - Step 5: Solve for x
x = 10,538,157,185.25/117,810.75 - Step 6: Final answer
x = 89,449.88
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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.