Finding the Fourth Proportional to 8,085,610.30, 12,128,415.45 and 7,766,745.70
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Solution
The fourth proportional to 8,085,610.30, 12,128,415.45 and 7,766,745.70 is: 11,650,118.55
Step by Step Solution
- Step 1: Write the proportion equation
8,085,610.30 : 12,128,415.45 = 7,766,745.70 : x - Step 2: Convert to fraction form
8,085,610.30/12,128,415.45 = 7,766,745.70/x - Step 3: Cross multiply
8,085,610.30x = 12,128,415.45 × 7,766,745.70 - Step 4: Simplify right side
8,085,610.30x = 94,198,318,544,101.06 - Step 5: Solve for x
x = 94,198,318,544,101.06/8,085,610.30 - Step 6: Final answer
x = 11,650,118.55
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Similar ratio
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1.5x scale
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.