Finding the Fourth Proportional to 77,811.19, 107,378.37 and 43,822.99
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Solution
The fourth proportional to 77,811.19, 107,378.37 and 43,822.99 is: 60,475.12
Step by Step Solution
- Step 1: Write the proportion equation
77,811.19 : 107,378.37 = 43,822.99 : x - Step 2: Convert to fraction form
77,811.19/107,378.37 = 43,822.99/x - Step 3: Cross multiply
77,811.19x = 107,378.37 × 43,822.99 - Step 4: Simplify right side
77,811.19x = 4,705,641,234.73 - Step 5: Solve for x
x = 4,705,641,234.73/77,811.19 - Step 6: Final answer
x = 60,475.12
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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.