Finding the Fourth Proportional to 84,639.12, 127,062.36 and 39,703.92
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Solution
The fourth proportional to 84,639.12, 127,062.36 and 39,703.92 is: 59,604.52
Step by Step Solution
- Step 1: Write the proportion equation
84,639.12 : 127,062.36 = 39,703.92 : x - Step 2: Convert to fraction form
84,639.12/127,062.36 = 39,703.92/x - Step 3: Cross multiply
84,639.12x = 127,062.36 × 39,703.92 - Step 4: Simplify right side
84,639.12x = 5,044,873,776.45 - Step 5: Solve for x
x = 5,044,873,776.45/84,639.12 - Step 6: Final answer
x = 59,604.52
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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.