Finding the Fourth Proportional to 90,845,163.60, 136,267,745.40 and 66,452,021.70
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Solution
The fourth proportional to 90,845,163.60, 136,267,745.40 and 66,452,021.70 is: 99,678,032.55
Step by Step Solution
- Step 1: Write the proportion equation
90,845,163.60 : 136,267,745.40 = 66,452,021.70 : x - Step 2: Convert to fraction form
90,845,163.60/136,267,745.40 = 66,452,021.70/x - Step 3: Cross multiply
90,845,163.60x = 136,267,745.40 × 66,452,021.70 - Step 4: Simplify right side
90,845,163.60x = 9,055,267,174,330,876 - Step 5: Solve for x
x = 9,055,267,174,330,876/90,845,163.60 - Step 6: Final answer
x = 99,678,032.55
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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.