Finding the Fourth Proportional to 86,309.44, 129,495.34 and 30,157.84
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Solution
The fourth proportional to 86,309.44, 129,495.34 and 30,157.84 is: 45,247.65
Step by Step Solution
- Step 1: Write the proportion equation
86,309.44 : 129,495.34 = 30,157.84 : x - Step 2: Convert to fraction form
86,309.44/129,495.34 = 30,157.84/x - Step 3: Cross multiply
86,309.44x = 129,495.34 × 30,157.84 - Step 4: Simplify right side
86,309.44x = 3,905,299,744.47 - Step 5: Solve for x
x = 3,905,299,744.47/86,309.44 - Step 6: Final answer
x = 45,247.65
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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.