Finding the Fourth Proportional to 72,718.36, 108,966.21 and 48,937.92
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Solution
The fourth proportional to 72,718.36, 108,966.21 and 48,937.92 is: 73,331.96
Step by Step Solution
- Step 1: Write the proportion equation
72,718.36 : 108,966.21 = 48,937.92 : x - Step 2: Convert to fraction form
72,718.36/108,966.21 = 48,937.92/x - Step 3: Cross multiply
72,718.36x = 108,966.21 × 48,937.92 - Step 4: Simplify right side
72,718.36x = 5,332,579,963.75 - Step 5: Solve for x
x = 5,332,579,963.75/72,718.36 - Step 6: Final answer
x = 73,331.96
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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.