Finding the Fourth Proportional to 80,915.99, 121,381.29 and 21,750.35
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Solution
The fourth proportional to 80,915.99, 121,381.29 and 21,750.35 is: 32,627.48
Step by Step Solution
- Step 1: Write the proportion equation
80,915.99 : 121,381.29 = 21,750.35 : x - Step 2: Convert to fraction form
80,915.99/121,381.29 = 21,750.35/x - Step 3: Cross multiply
80,915.99x = 121,381.29 × 21,750.35 - Step 4: Simplify right side
80,915.99x = 2,640,084,934.05 - Step 5: Solve for x
x = 2,640,084,934.05/80,915.99 - Step 6: Final answer
x = 32,627.48
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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.