Finding the Fourth Proportional to 99,638.92, 149,485.72 and 49,658.68
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Solution
The fourth proportional to 99,638.92, 149,485.72 and 49,658.68 is: 74,501.65
Step by Step Solution
- Step 1: Write the proportion equation
99,638.92 : 149,485.72 = 49,658.68 : x - Step 2: Convert to fraction form
99,638.92/149,485.72 = 49,658.68/x - Step 3: Cross multiply
99,638.92x = 149,485.72 × 49,658.68 - Step 4: Simplify right side
99,638.92x = 7,423,263,534.05 - Step 5: Solve for x
x = 7,423,263,534.05/99,638.92 - Step 6: Final answer
x = 74,501.65
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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.