Finding the Fourth Proportional to 71,552,021.80, 107,328,032.70 and 66,513,173.80
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Solution
The fourth proportional to 71,552,021.80, 107,328,032.70 and 66,513,173.80 is: 99,769,760.70
Step by Step Solution
- Step 1: Write the proportion equation
71,552,021.80 : 107,328,032.70 = 66,513,173.80 : x - Step 2: Convert to fraction form
71,552,021.80/107,328,032.70 = 66,513,173.80/x - Step 3: Cross multiply
71,552,021.80x = 107,328,032.70 × 66,513,173.80 - Step 4: Simplify right side
71,552,021.80x = 7,138,728,092,587,183 - Step 5: Solve for x
x = 7,138,728,092,587,183/71,552,021.80 - Step 6: Final answer
x = 99,769,760.70
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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.