Finding the Fourth Proportional to 88,234.79, 121,763.76 and 47,948.56
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Solution
The fourth proportional to 88,234.79, 121,763.76 and 47,948.56 is: 66,168.88
Step by Step Solution
- Step 1: Write the proportion equation
88,234.79 : 121,763.76 = 47,948.56 : x - Step 2: Convert to fraction form
88,234.79/121,763.76 = 47,948.56/x - Step 3: Cross multiply
88,234.79x = 121,763.76 × 47,948.56 - Step 4: Simplify right side
88,234.79x = 5,838,396,467.97 - Step 5: Solve for x
x = 5,838,396,467.97/88,234.79 - Step 6: Final answer
x = 66,168.88
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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.