Finding the Fourth Proportional to 121,689.28, 182,534.05 and 31,731.91
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Solution
The fourth proportional to 121,689.28, 182,534.05 and 31,731.91 is: 47,597.90
Step by Step Solution
- Step 1: Write the proportion equation
121,689.28 : 182,534.05 = 31,731.91 : x - Step 2: Convert to fraction form
121,689.28/182,534.05 = 31,731.91/x - Step 3: Cross multiply
121,689.28x = 182,534.05 × 31,731.91 - Step 4: Simplify right side
121,689.28x = 5,792,154,254.80 - Step 5: Solve for x
x = 5,792,154,254.80/121,689.28 - Step 6: Final answer
x = 47,597.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.