Finding the Fourth Proportional to 81,727.25, 122,516.89 and 56,778.98
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Solution
The fourth proportional to 81,727.25, 122,516.89 and 56,778.98 is: 85,117.07
Step by Step Solution
- Step 1: Write the proportion equation
81,727.25 : 122,516.89 = 56,778.98 : x - Step 2: Convert to fraction form
81,727.25/122,516.89 = 56,778.98/x - Step 3: Cross multiply
81,727.25x = 122,516.89 × 56,778.98 - Step 4: Simplify right side
81,727.25x = 6,956,383,292.44 - Step 5: Solve for x
x = 6,956,383,292.44/81,727.25 - Step 6: Final answer
x = 85,117.07
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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.