Finding the Fourth Proportional to 76,882.88, 115,343.76 and 21,478.88
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Solution
The fourth proportional to 76,882.88, 115,343.76 and 21,478.88 is: 32,223.75
Step by Step Solution
- Step 1: Write the proportion equation
76,882.88 : 115,343.76 = 21,478.88 : x - Step 2: Convert to fraction form
76,882.88/115,343.76 = 21,478.88/x - Step 3: Cross multiply
76,882.88x = 115,343.76 × 21,478.88 - Step 4: Simplify right side
76,882.88x = 2,477,454,203.07 - Step 5: Solve for x
x = 2,477,454,203.07/76,882.88 - Step 6: Final answer
x = 32,223.75
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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.