Finding the Fourth Proportional to 86,184,461.80, 129,276,692.70 and 66,910,868.20
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Solution
The fourth proportional to 86,184,461.80, 129,276,692.70 and 66,910,868.20 is: 100,366,302.30
Step by Step Solution
- Step 1: Write the proportion equation
86,184,461.80 : 129,276,692.70 = 66,910,868.20 : x - Step 2: Convert to fraction form
86,184,461.80/129,276,692.70 = 66,910,868.20/x - Step 3: Cross multiply
86,184,461.80x = 129,276,692.70 × 66,910,868.20 - Step 4: Simplify right side
86,184,461.80x = 8,650,015,746,581,603 - Step 5: Solve for x
x = 8,650,015,746,581,603/86,184,461.80 - Step 6: Final answer
x = 100,366,302.30
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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.