Finding the Fourth Proportional to 80,220.57, 119,843.31 and 51,909.99
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Solution
The fourth proportional to 80,220.57, 119,843.31 and 51,909.99 is: 77,549.50
Step by Step Solution
- Step 1: Write the proportion equation
80,220.57 : 119,843.31 = 51,909.99 : x - Step 2: Convert to fraction form
80,220.57/119,843.31 = 51,909.99/x - Step 3: Cross multiply
80,220.57x = 119,843.31 × 51,909.99 - Step 4: Simplify right side
80,220.57x = 6,221,065,023.67 - Step 5: Solve for x
x = 6,221,065,023.67/80,220.57 - Step 6: Final answer
x = 77,549.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.