Finding the Fourth Proportional to 65,741,136.38, 90,725,438.70 and 36,371,990.62
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Solution
The fourth proportional to 65,741,136.38, 90,725,438.70 and 36,371,990.62 is: 50,194,824.54
Step by Step Solution
- Step 1: Write the proportion equation
65,741,136.38 : 90,725,438.70 = 36,371,990.62 : x - Step 2: Convert to fraction form
65,741,136.38/90,725,438.70 = 36,371,990.62/x - Step 3: Cross multiply
65,741,136.38x = 90,725,438.70 × 36,371,990.62 - Step 4: Simplify right side
65,741,136.38x = 3,299,864,805,391,785 - Step 5: Solve for x
x = 3,299,864,805,391,785/65,741,136.38 - Step 6: Final answer
x = 50,194,824.54
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.