Finding the Fourth Proportional to 87,666.55, 120,981.14 and 49,939.99
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Solution
The fourth proportional to 87,666.55, 120,981.14 and 49,939.99 is: 68,917.93
Step by Step Solution
- Step 1: Write the proportion equation
87,666.55 : 120,981.14 = 49,939.99 : x - Step 2: Convert to fraction form
87,666.55/120,981.14 = 49,939.99/x - Step 3: Cross multiply
87,666.55x = 120,981.14 × 49,939.99 - Step 4: Simplify right side
87,666.55x = 6,041,796,921.79 - Step 5: Solve for x
x = 6,041,796,921.79/87,666.55 - Step 6: Final answer
x = 68,917.93
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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.