Finding the Fourth Proportional to 71,304,091.20, 106,956,136.80 and 66,485,692.80
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Solution
The fourth proportional to 71,304,091.20, 106,956,136.80 and 66,485,692.80 is: 99,728,539.20
Step by Step Solution
- Step 1: Write the proportion equation
71,304,091.20 : 106,956,136.80 = 66,485,692.80 : x - Step 2: Convert to fraction form
71,304,091.20/106,956,136.80 = 66,485,692.80/x - Step 3: Cross multiply
71,304,091.20x = 106,956,136.80 × 66,485,692.80 - Step 4: Simplify right side
71,304,091.20x = 7,111,052,854,359,575 - Step 5: Solve for x
x = 7,111,052,854,359,575/71,304,091.20 - Step 6: Final answer
x = 99,728,539.20
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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.