Finding the Fourth Proportional to 90,630.81, 135,806.49 and 48,516.48
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Solution
The fourth proportional to 90,630.81, 135,806.49 and 48,516.48 is: 72,699.92
Step by Step Solution
- Step 1: Write the proportion equation
90,630.81 : 135,806.49 = 48,516.48 : x - Step 2: Convert to fraction form
90,630.81/135,806.49 = 48,516.48/x - Step 3: Cross multiply
90,630.81x = 135,806.49 × 48,516.48 - Step 4: Simplify right side
90,630.81x = 6,588,852,855.96 - Step 5: Solve for x
x = 6,588,852,855.96/90,630.81 - Step 6: Final answer
x = 72,699.92
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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.