Finding the Fourth Proportional to 128,449.70, 192,692.99 and 39,710.12
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Solution
The fourth proportional to 128,449.70, 192,692.99 and 39,710.12 is: 59,570.88
Step by Step Solution
- Step 1: Write the proportion equation
128,449.70 : 192,692.99 = 39,710.12 : x - Step 2: Convert to fraction form
128,449.70/192,692.99 = 39,710.12/x - Step 3: Cross multiply
128,449.70x = 192,692.99 × 39,710.12 - Step 4: Simplify right side
128,449.70x = 7,651,860,792.59 - Step 5: Solve for x
x = 7,651,860,792.59/128,449.70 - Step 6: Final answer
x = 59,570.88
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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.