Finding the Fourth Proportional to 83,412.11, 125,118.79 and 66,750.82
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Solution
The fourth proportional to 83,412.11, 125,118.79 and 66,750.82 is: 100,126.72
Step by Step Solution
- Step 1: Write the proportion equation
83,412.11 : 125,118.79 = 66,750.82 : x - Step 2: Convert to fraction form
83,412.11/125,118.79 = 66,750.82/x - Step 3: Cross multiply
83,412.11x = 125,118.79 × 66,750.82 - Step 4: Simplify right side
83,412.11x = 8,351,781,350.23 - Step 5: Solve for x
x = 8,351,781,350.23/83,412.11 - Step 6: Final answer
x = 100,126.72
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.