Finding the Fourth Proportional to 84,524,232.20, 126,786,348.30 and 78,813,537.80
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Solution
The fourth proportional to 84,524,232.20, 126,786,348.30 and 78,813,537.80 is: 118,220,306.70
Step by Step Solution
- Step 1: Write the proportion equation
84,524,232.20 : 126,786,348.30 = 78,813,537.80 : x - Step 2: Convert to fraction form
84,524,232.20/126,786,348.30 = 78,813,537.80/x - Step 3: Cross multiply
84,524,232.20x = 126,786,348.30 × 78,813,537.80 - Step 4: Simplify right side
84,524,232.20x = 9,992,480,654,266,016 - Step 5: Solve for x
x = 9,992,480,654,266,016/84,524,232.20 - Step 6: Final answer
x = 118,220,306.70
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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.