Finding the Fourth Proportional to 83,991.42, 115,906.15 and 48,179.14
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Solution
The fourth proportional to 83,991.42, 115,906.15 and 48,179.14 is: 66,486.06
Step by Step Solution
- Step 1: Write the proportion equation
83,991.42 : 115,906.15 = 48,179.14 : x - Step 2: Convert to fraction form
83,991.42/115,906.15 = 48,179.14/x - Step 3: Cross multiply
83,991.42x = 115,906.15 × 48,179.14 - Step 4: Simplify right side
83,991.42x = 5,584,258,627.71 - Step 5: Solve for x
x = 5,584,258,627.71/83,991.42 - Step 6: Final answer
x = 66,486.06
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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.