Finding the Fourth Proportional to 72,983.92, 100,717.68 and 39,449.92
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Solution
The fourth proportional to 72,983.92, 100,717.68 and 39,449.92 is: 54,440.82
Step by Step Solution
- Step 1: Write the proportion equation
72,983.92 : 100,717.68 = 39,449.92 : x - Step 2: Convert to fraction form
72,983.92/100,717.68 = 39,449.92/x - Step 3: Cross multiply
72,983.92x = 100,717.68 × 39,449.92 - Step 4: Simplify right side
72,983.92x = 3,973,304,418.59 - Step 5: Solve for x
x = 3,973,304,418.59/72,983.92 - Step 6: Final answer
x = 54,440.82
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.