Finding the Fourth Proportional to 88,201.70, 121,717.86 and 47,915.14
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Solution
The fourth proportional to 88,201.70, 121,717.86 and 47,915.14 is: 66,122.63
Step by Step Solution
- Step 1: Write the proportion equation
88,201.70 : 121,717.86 = 47,915.14 : x - Step 2: Convert to fraction form
88,201.70/121,717.86 = 47,915.14/x - Step 3: Cross multiply
88,201.70x = 121,717.86 × 47,915.14 - Step 4: Simplify right side
88,201.70x = 5,832,128,302.40 - Step 5: Solve for x
x = 5,832,128,302.40/88,201.70 - Step 6: Final answer
x = 66,122.63
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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.