Finding the Fourth Proportional to 71,145.58, 106,718.34 and 18,554.92
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Solution
The fourth proportional to 71,145.58, 106,718.34 and 18,554.92 is: 27,832.37
Step by Step Solution
- Step 1: Write the proportion equation
71,145.58 : 106,718.34 = 18,554.92 : x - Step 2: Convert to fraction form
71,145.58/106,718.34 = 18,554.92/x - Step 3: Cross multiply
71,145.58x = 106,718.34 × 18,554.92 - Step 4: Simplify right side
71,145.58x = 1,980,150,261.23 - Step 5: Solve for x
x = 1,980,150,261.23/71,145.58 - Step 6: Final answer
x = 27,832.37
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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.