Finding the Fourth Proportional to 70,329.87, 105,421.91 and 43,974.09
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Solution
The fourth proportional to 70,329.87, 105,421.91 and 43,974.09 is: 65,915.55
Step by Step Solution
- Step 1: Write the proportion equation
70,329.87 : 105,421.91 = 43,974.09 : x - Step 2: Convert to fraction form
70,329.87/105,421.91 = 43,974.09/x - Step 3: Cross multiply
70,329.87x = 105,421.91 × 43,974.09 - Step 4: Simplify right side
70,329.87x = 4,635,832,338.44 - Step 5: Solve for x
x = 4,635,832,338.44/70,329.87 - Step 6: Final answer
x = 65,915.55
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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.