Finding the Fourth Proportional to 73,031.36, 109,549.78 and 20,439.48
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Solution
The fourth proportional to 73,031.36, 109,549.78 and 20,439.48 is: 30,659.99
Step by Step Solution
- Step 1: Write the proportion equation
73,031.36 : 109,549.78 = 20,439.48 : x - Step 2: Convert to fraction form
73,031.36/109,549.78 = 20,439.48/x - Step 3: Cross multiply
73,031.36x = 109,549.78 × 20,439.48 - Step 4: Simplify right side
73,031.36x = 2,239,140,486.22 - Step 5: Solve for x
x = 2,239,140,486.22/73,031.36 - Step 6: Final answer
x = 30,659.99
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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.