Finding the Fourth Proportional to 81,304.79, 121,957.18 and 53,596.31
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Solution
The fourth proportional to 81,304.79, 121,957.18 and 53,596.31 is: 80,394.46
Step by Step Solution
- Step 1: Write the proportion equation
81,304.79 : 121,957.18 = 53,596.31 : x - Step 2: Convert to fraction form
81,304.79/121,957.18 = 53,596.31/x - Step 3: Cross multiply
81,304.79x = 121,957.18 × 53,596.31 - Step 4: Simplify right side
81,304.79x = 6,536,454,082.23 - Step 5: Solve for x
x = 6,536,454,082.23/81,304.79 - Step 6: Final answer
x = 80,394.46
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1.5x scale
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.