Finding the Fourth Proportional to 87,171,773.24, 120,305,549.95 and 65,106,982.82
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Solution
The fourth proportional to 87,171,773.24, 120,305,549.95 and 65,106,982.82 is: 89,853,986.93
Step by Step Solution
- Step 1: Write the proportion equation
87,171,773.24 : 120,305,549.95 = 65,106,982.82 : x - Step 2: Convert to fraction form
87,171,773.24/120,305,549.95 = 65,106,982.82/x - Step 3: Cross multiply
87,171,773.24x = 120,305,549.95 × 65,106,982.82 - Step 4: Simplify right side
87,171,773.24x = 7,832,731,372,981,007 - Step 5: Solve for x
x = 7,832,731,372,981,007/87,171,773.24 - Step 6: Final answer
x = 89,853,986.93
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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.