Finding the Fourth Proportional to 79,041.26, 117,998.46 and 76,272.68
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Solution
The fourth proportional to 79,041.26, 117,998.46 and 76,272.68 is: 113,865.33
Step by Step Solution
- Step 1: Write the proportion equation
79,041.26 : 117,998.46 = 76,272.68 : x - Step 2: Convert to fraction form
79,041.26/117,998.46 = 76,272.68/x - Step 3: Cross multiply
79,041.26x = 117,998.46 × 76,272.68 - Step 4: Simplify right side
79,041.26x = 9,000,058,780.07 - Step 5: Solve for x
x = 9,000,058,780.07/79,041.26 - Step 6: Final answer
x = 113,865.33
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.