Finding the Fourth Proportional to 87,743.82, 121,030.68 and 57,531.09
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Solution
The fourth proportional to 87,743.82, 121,030.68 and 57,531.09 is: 79,356.32
Step by Step Solution
- Step 1: Write the proportion equation
87,743.82 : 121,030.68 = 57,531.09 : x - Step 2: Convert to fraction form
87,743.82/121,030.68 = 57,531.09/x - Step 3: Cross multiply
87,743.82x = 121,030.68 × 57,531.09 - Step 4: Simplify right side
87,743.82x = 6,963,026,943.84 - Step 5: Solve for x
x = 6,963,026,943.84/87,743.82 - Step 6: Final answer
x = 79,356.32
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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.