Finding the Fourth Proportional to 79,278.22, 109,407.36 and 47,440.99
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Solution
The fourth proportional to 79,278.22, 109,407.36 and 47,440.99 is: 65,470.61
Step by Step Solution
- Step 1: Write the proportion equation
79,278.22 : 109,407.36 = 47,440.99 : x - Step 2: Convert to fraction form
79,278.22/109,407.36 = 47,440.99/x - Step 3: Cross multiply
79,278.22x = 109,407.36 × 47,440.99 - Step 4: Simplify right side
79,278.22x = 5,190,393,471.69 - Step 5: Solve for x
x = 5,190,393,471.69/79,278.22 - Step 6: Final answer
x = 65,470.61
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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.