Finding the Fourth Proportional to 86,749.44, 130,125.09 and 30,579.09
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Solution
The fourth proportional to 86,749.44, 130,125.09 and 30,579.09 is: 45,868.96
Step by Step Solution
- Step 1: Write the proportion equation
86,749.44 : 130,125.09 = 30,579.09 : x - Step 2: Convert to fraction form
86,749.44/130,125.09 = 30,579.09/x - Step 3: Cross multiply
86,749.44x = 130,125.09 × 30,579.09 - Step 4: Simplify right side
86,749.44x = 3,979,106,838.37 - Step 5: Solve for x
x = 3,979,106,838.37/86,749.44 - Step 6: Final answer
x = 45,868.96
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1.5x scale
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.