Finding the Fourth Proportional to 81,327.20, 112,300.79 and 51,162.99
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Solution
The fourth proportional to 81,327.20, 112,300.79 and 51,162.99 is: 70,648.50
Step by Step Solution
- Step 1: Write the proportion equation
81,327.20 : 112,300.79 = 51,162.99 : x - Step 2: Convert to fraction form
81,327.20/112,300.79 = 51,162.99/x - Step 3: Cross multiply
81,327.20x = 112,300.79 × 51,162.99 - Step 4: Simplify right side
81,327.20x = 5,745,643,939.95 - Step 5: Solve for x
x = 5,745,643,939.95/81,327.20 - Step 6: Final answer
x = 70,648.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.