Finding the Fourth Proportional to 86,943.38, 119,981.86 and 49,217.63
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Solution
The fourth proportional to 86,943.38, 119,981.86 and 49,217.63 is: 67,920.32
Step by Step Solution
- Step 1: Write the proportion equation
86,943.38 : 119,981.86 = 49,217.63 : x - Step 2: Convert to fraction form
86,943.38/119,981.86 = 49,217.63/x - Step 3: Cross multiply
86,943.38x = 119,981.86 × 49,217.63 - Step 4: Simplify right side
86,943.38x = 5,905,222,069.24 - Step 5: Solve for x
x = 5,905,222,069.24/86,943.38 - Step 6: Final answer
x = 67,920.32
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1.5x scale
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.