Finding the Fourth Proportional to 128,543.06, 192,714.68 and 48,579.72
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Solution
The fourth proportional to 128,543.06, 192,714.68 and 48,579.72 is: 72,831.82
Step by Step Solution
- Step 1: Write the proportion equation
128,543.06 : 192,714.68 = 48,579.72 : x - Step 2: Convert to fraction form
128,543.06/192,714.68 = 48,579.72/x - Step 3: Cross multiply
128,543.06x = 192,714.68 × 48,579.72 - Step 4: Simplify right side
128,543.06x = 9,362,025,194.29 - Step 5: Solve for x
x = 9,362,025,194.29/128,543.06 - Step 6: Final answer
x = 72,831.82
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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.