Finding the Fourth Proportional to 128,854.64, 193,235.63 and 44,591.92
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Solution
The fourth proportional to 128,854.64, 193,235.63 and 44,591.92 is: 66,871.85
Step by Step Solution
- Step 1: Write the proportion equation
128,854.64 : 193,235.63 = 44,591.92 : x - Step 2: Convert to fraction form
128,854.64/193,235.63 = 44,591.92/x - Step 3: Cross multiply
128,854.64x = 193,235.63 × 44,591.92 - Step 4: Simplify right side
128,854.64x = 8,616,747,754.11 - Step 5: Solve for x
x = 8,616,747,754.11/128,854.64 - Step 6: Final answer
x = 66,871.85
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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.