Finding the Fourth Proportional to 79,738.40, 119,623.80 and 27,153.20
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Solution
The fourth proportional to 79,738.40, 119,623.80 and 27,153.20 is: 40,735.32
Step by Step Solution
- Step 1: Write the proportion equation
79,738.40 : 119,623.80 = 27,153.20 : x - Step 2: Convert to fraction form
79,738.40/119,623.80 = 27,153.20/x - Step 3: Cross multiply
79,738.40x = 119,623.80 × 27,153.20 - Step 4: Simplify right side
79,738.40x = 3,248,168,966.16 - Step 5: Solve for x
x = 3,248,168,966.16/79,738.40 - Step 6: Final answer
x = 40,735.32
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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.