Finding the Fourth Proportional to 96,939.68, 133,722.12 and 56,644.88
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Solution
The fourth proportional to 96,939.68, 133,722.12 and 56,644.88 is: 78,138.01
Step by Step Solution
- Step 1: Write the proportion equation
96,939.68 : 133,722.12 = 56,644.88 : x - Step 2: Convert to fraction form
96,939.68/133,722.12 = 56,644.88/x - Step 3: Cross multiply
96,939.68x = 133,722.12 × 56,644.88 - Step 4: Simplify right side
96,939.68x = 7,574,673,440.75 - Step 5: Solve for x
x = 7,574,673,440.75/96,939.68 - Step 6: Final answer
x = 78,138.01
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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.