Finding the Fourth Proportional to 77,696.83, 107,218.51 and 43,705.99
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Solution
The fourth proportional to 77,696.83, 107,218.51 and 43,705.99 is: 60,312.51
Step by Step Solution
- Step 1: Write the proportion equation
77,696.83 : 107,218.51 = 43,705.99 : x - Step 2: Convert to fraction form
77,696.83/107,218.51 = 43,705.99/x - Step 3: Cross multiply
77,696.83x = 107,218.51 × 43,705.99 - Step 4: Simplify right side
77,696.83x = 4,686,091,125.87 - Step 5: Solve for x
x = 4,686,091,125.87/77,696.83 - Step 6: Final answer
x = 60,312.51
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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.