Finding the Fourth Proportional to 71,489.53, 107,234.30 and 18,899.02
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Solution
The fourth proportional to 71,489.53, 107,234.30 and 18,899.02 is: 28,348.53
Step by Step Solution
- Step 1: Write the proportion equation
71,489.53 : 107,234.30 = 18,899.02 : x - Step 2: Convert to fraction form
71,489.53/107,234.30 = 18,899.02/x - Step 3: Cross multiply
71,489.53x = 107,234.30 × 18,899.02 - Step 4: Simplify right side
71,489.53x = 2,026,623,361.68 - Step 5: Solve for x
x = 2,026,623,361.68/71,489.53 - Step 6: Final answer
x = 28,348.53
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1.5x scale
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.