Finding the Fourth Proportional to 81,915.23, 122,916.99 and 34,563.14
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Solution
The fourth proportional to 81,915.23, 122,916.99 and 34,563.14 is: 51,863.33
Step by Step Solution
- Step 1: Write the proportion equation
81,915.23 : 122,916.99 = 34,563.14 : x - Step 2: Convert to fraction form
81,915.23/122,916.99 = 34,563.14/x - Step 3: Cross multiply
81,915.23x = 122,916.99 × 34,563.14 - Step 4: Simplify right side
81,915.23x = 4,248,397,109.71 - Step 5: Solve for x
x = 4,248,397,109.71/81,915.23 - Step 6: Final answer
x = 51,863.33
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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.