Finding the Fourth Proportional to 83,919.81, 115,812.18 and 45,680.75
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Solution
The fourth proportional to 83,919.81, 115,812.18 and 45,680.75 is: 63,040.99
Step by Step Solution
- Step 1: Write the proportion equation
83,919.81 : 115,812.18 = 45,680.75 : x - Step 2: Convert to fraction form
83,919.81/115,812.18 = 45,680.75/x - Step 3: Cross multiply
83,919.81x = 115,812.18 × 45,680.75 - Step 4: Simplify right side
83,919.81x = 5,290,387,531.07 - Step 5: Solve for x
x = 5,290,387,531.07/83,919.81 - Step 6: Final answer
x = 63,040.99
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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.