Finding the Fourth Proportional to 71,810.20, 107,692.62 and 66,473.92
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Solution
The fourth proportional to 71,810.20, 107,692.62 and 66,473.92 is: 99,689.89
Step by Step Solution
- Step 1: Write the proportion equation
71,810.20 : 107,692.62 = 66,473.92 : x - Step 2: Convert to fraction form
71,810.20/107,692.62 = 66,473.92/x - Step 3: Cross multiply
71,810.20x = 107,692.62 × 66,473.92 - Step 4: Simplify right side
71,810.20x = 7,158,750,606.47 - Step 5: Solve for x
x = 7,158,750,606.47/71,810.20 - Step 6: Final answer
x = 99,689.89
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.