Finding the Fourth Proportional to 84,988.36, 117,279.12 and 47,261.80
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Solution
The fourth proportional to 84,988.36, 117,279.12 and 47,261.80 is: 65,218.61
Step by Step Solution
- Step 1: Write the proportion equation
84,988.36 : 117,279.12 = 47,261.80 : x - Step 2: Convert to fraction form
84,988.36/117,279.12 = 47,261.80/x - Step 3: Cross multiply
84,988.36x = 117,279.12 × 47,261.80 - Step 4: Simplify right side
84,988.36x = 5,542,822,313.62 - Step 5: Solve for x
x = 5,542,822,313.62/84,988.36 - Step 6: Final answer
x = 65,218.61
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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.