Finding the Fourth Proportional to 71,539.18, 107,310.80 and 18,948.67
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Solution
The fourth proportional to 71,539.18, 107,310.80 and 18,948.67 is: 28,423.54
Step by Step Solution
- Step 1: Write the proportion equation
71,539.18 : 107,310.80 = 18,948.67 : x - Step 2: Convert to fraction form
71,539.18/107,310.80 = 18,948.67/x - Step 3: Cross multiply
71,539.18x = 107,310.80 × 18,948.67 - Step 4: Simplify right side
71,539.18x = 2,033,396,715.73 - Step 5: Solve for x
x = 2,033,396,715.73/71,539.18 - Step 6: Final answer
x = 28,423.54
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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.