Finding the Fourth Proportional to 87,950,971.79, 121,321,914.62 and 54,853,760.17
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Solution
The fourth proportional to 87,950,971.79, 121,321,914.62 and 54,853,760.17 is: 75,666,738.78
Step by Step Solution
- Step 1: Write the proportion equation
87,950,971.79 : 121,321,914.62 = 54,853,760.17 : x - Step 2: Convert to fraction form
87,950,971.79/121,321,914.62 = 54,853,760.17/x - Step 3: Cross multiply
87,950,971.79x = 121,321,914.62 × 54,853,760.17 - Step 4: Simplify right side
87,950,971.79x = 6,654,963,207,930,697 - Step 5: Solve for x
x = 6,654,963,207,930,697/87,950,971.79 - Step 6: Final answer
x = 75,666,738.78
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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.