Finding the Fourth Proportional to 84,031.36, 115,968.72 and 48,222.88
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Solution
The fourth proportional to 84,031.36, 115,968.72 and 48,222.88 is: 66,550.70
Step by Step Solution
- Step 1: Write the proportion equation
84,031.36 : 115,968.72 = 48,222.88 : x - Step 2: Convert to fraction form
84,031.36/115,968.72 = 48,222.88/x - Step 3: Cross multiply
84,031.36x = 115,968.72 × 48,222.88 - Step 4: Simplify right side
84,031.36x = 5,592,345,668.31 - Step 5: Solve for x
x = 5,592,345,668.31/84,031.36 - Step 6: Final answer
x = 66,550.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.