Finding the Fourth Proportional to 81,714.40, 122,643.60 and 48,392.80
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Solution
The fourth proportional to 81,714.40, 122,643.60 and 48,392.80 is: 72,631.84
Step by Step Solution
- Step 1: Write the proportion equation
81,714.40 : 122,643.60 = 48,392.80 : x - Step 2: Convert to fraction form
81,714.40/122,643.60 = 48,392.80/x - Step 3: Cross multiply
81,714.40x = 122,643.60 × 48,392.80 - Step 4: Simplify right side
81,714.40x = 5,935,067,206.08 - Step 5: Solve for x
x = 5,935,067,206.08/81,714.40 - Step 6: Final answer
x = 72,631.84
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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.