Finding the Fourth Proportional to 86,739.98, 130,021.32 and 49,220.79
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Solution
The fourth proportional to 86,739.98, 130,021.32 and 49,220.79 is: 73,780.88
Step by Step Solution
- Step 1: Write the proportion equation
86,739.98 : 130,021.32 = 49,220.79 : x - Step 2: Convert to fraction form
86,739.98/130,021.32 = 49,220.79/x - Step 3: Cross multiply
86,739.98x = 130,021.32 × 49,220.79 - Step 4: Simplify right side
86,739.98x = 6,399,752,087.24 - Step 5: Solve for x
x = 6,399,752,087.24/86,739.98 - Step 6: Final answer
x = 73,780.88
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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.