Finding the Fourth Proportional to 99,731.20, 149,596.80 and 40,609.30
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Solution
The fourth proportional to 99,731.20, 149,596.80 and 40,609.30 is: 60,913.95
Step by Step Solution
- Step 1: Write the proportion equation
99,731.20 : 149,596.80 = 40,609.30 : x - Step 2: Convert to fraction form
99,731.20/149,596.80 = 40,609.30/x - Step 3: Cross multiply
99,731.20x = 149,596.80 × 40,609.30 - Step 4: Simplify right side
99,731.20x = 6,075,021,330.24 - Step 5: Solve for x
x = 6,075,021,330.24/99,731.20 - Step 6: Final answer
x = 60,913.95
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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.