Finding the Fourth Proportional to 87,915.99, 131,873.97 and 21,355.66
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Solution
The fourth proportional to 87,915.99, 131,873.97 and 21,355.66 is: 32,033.49
Step by Step Solution
- Step 1: Write the proportion equation
87,915.99 : 131,873.97 = 21,355.66 : x - Step 2: Convert to fraction form
87,915.99/131,873.97 = 21,355.66/x - Step 3: Cross multiply
87,915.99x = 131,873.97 × 21,355.66 - Step 4: Simplify right side
87,915.99x = 2,816,255,666.17 - Step 5: Solve for x
x = 2,816,255,666.17/87,915.99 - Step 6: Final answer
x = 32,033.49
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1.5x scale
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.