Finding the Fourth Proportional to 81,657.24, 122,371.74 and 44,136.40
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Solution
The fourth proportional to 81,657.24, 122,371.74 and 44,136.40 is: 66,142.92
Step by Step Solution
- Step 1: Write the proportion equation
81,657.24 : 122,371.74 = 44,136.40 : x - Step 2: Convert to fraction form
81,657.24/122,371.74 = 44,136.40/x - Step 3: Cross multiply
81,657.24x = 122,371.74 × 44,136.40 - Step 4: Simplify right side
81,657.24x = 5,401,048,065.34 - Step 5: Solve for x
x = 5,401,048,065.34/81,657.24 - Step 6: Final answer
x = 66,142.92
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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.