Finding the Fourth Proportional to 77,578.16, 107,053.79 and 43,587.99
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Solution
The fourth proportional to 77,578.16, 107,053.79 and 43,587.99 is: 60,149.14
Step by Step Solution
- Step 1: Write the proportion equation
77,578.16 : 107,053.79 = 43,587.99 : x - Step 2: Convert to fraction form
77,578.16/107,053.79 = 43,587.99/x - Step 3: Cross multiply
77,578.16x = 107,053.79 × 43,587.99 - Step 4: Simplify right side
77,578.16x = 4,666,259,310.04 - Step 5: Solve for x
x = 4,666,259,310.04/77,578.16 - Step 6: Final answer
x = 60,149.14
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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.