Finding the Fourth Proportional to 65,288,102.20, 97,820,178.90 and 31,135,910.20
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Solution
The fourth proportional to 65,288,102.20, 97,820,178.90 and 31,135,910.20 is: 46,650,464.68
Step by Step Solution
- Step 1: Write the proportion equation
65,288,102.20 : 97,820,178.90 = 31,135,910.20 : x - Step 2: Convert to fraction form
65,288,102.20/97,820,178.90 = 31,135,910.20/x - Step 3: Cross multiply
65,288,102.20x = 97,820,178.90 × 31,135,910.20 - Step 4: Simplify right side
65,288,102.20x = 3,045,720,305,978,335 - Step 5: Solve for x
x = 3,045,720,305,978,335/65,288,102.20 - Step 6: Final answer
x = 46,650,464.68
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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.