Finding the Fourth Proportional to 80,957.62, 121,490.34 and 28,367.02
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Solution
The fourth proportional to 80,957.62, 121,490.34 and 28,367.02 is: 42,569.42
Step by Step Solution
- Step 1: Write the proportion equation
80,957.62 : 121,490.34 = 28,367.02 : x - Step 2: Convert to fraction form
80,957.62/121,490.34 = 28,367.02/x - Step 3: Cross multiply
80,957.62x = 121,490.34 × 28,367.02 - Step 4: Simplify right side
80,957.62x = 3,446,318,904.59 - Step 5: Solve for x
x = 3,446,318,904.59/80,957.62 - Step 6: Final answer
x = 42,569.42
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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.