Finding the Fourth Proportional to 86,220,135.20, 129,379,969.20 and 32,372,890.40
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Solution
The fourth proportional to 86,220,135.20, 129,379,969.20 and 32,372,890.40 is: 48,578,021.28
Step by Step Solution
- Step 1: Write the proportion equation
86,220,135.20 : 129,379,969.20 = 32,372,890.40 : x - Step 2: Convert to fraction form
86,220,135.20/129,379,969.20 = 32,372,890.40/x - Step 3: Cross multiply
86,220,135.20x = 129,379,969.20 × 32,372,890.40 - Step 4: Simplify right side
86,220,135.20x = 4,188,403,562,866,975.50 - Step 5: Solve for x
x = 4,188,403,562,866,975.50/86,220,135.20 - Step 6: Final answer
x = 48,578,021.28
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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.