Finding the Fourth Proportional to 99,687.80, 149,531.70 and 29,566.50
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Solution
The fourth proportional to 99,687.80, 149,531.70 and 29,566.50 is: 44,349.75
Step by Step Solution
- Step 1: Write the proportion equation
99,687.80 : 149,531.70 = 29,566.50 : x - Step 2: Convert to fraction form
99,687.80/149,531.70 = 29,566.50/x - Step 3: Cross multiply
99,687.80x = 149,531.70 × 29,566.50 - Step 4: Simplify right side
99,687.80x = 4,421,129,008.05 - Step 5: Solve for x
x = 4,421,129,008.05/99,687.80 - Step 6: Final answer
x = 44,349.75
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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.