Finding the Fourth Proportional to 81,792.30, 122,688.45 and 48,614.70
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Solution
The fourth proportional to 81,792.30, 122,688.45 and 48,614.70 is: 72,922.05
Step by Step Solution
- Step 1: Write the proportion equation
81,792.30 : 122,688.45 = 48,614.70 : x - Step 2: Convert to fraction form
81,792.30/122,688.45 = 48,614.70/x - Step 3: Cross multiply
81,792.30x = 122,688.45 × 48,614.70 - Step 4: Simplify right side
81,792.30x = 5,964,462,190.22 - Step 5: Solve for x
x = 5,964,462,190.22/81,792.30 - Step 6: Final answer
x = 72,922.05
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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.