Finding the Fourth Proportional to 77,810.19, 107,376.99 and 43,821.99
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Solution
The fourth proportional to 77,810.19, 107,376.99 and 43,821.99 is: 60,473.74
Step by Step Solution
- Step 1: Write the proportion equation
77,810.19 : 107,376.99 = 43,821.99 : x - Step 2: Convert to fraction form
77,810.19/107,376.99 = 43,821.99/x - Step 3: Cross multiply
77,810.19x = 107,376.99 × 43,821.99 - Step 4: Simplify right side
77,810.19x = 4,705,473,382.01 - Step 5: Solve for x
x = 4,705,473,382.01/77,810.19 - Step 6: Final answer
x = 60,473.74
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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.