Finding the Fourth Proportional to 86,853.64, 130,278.03 and 36,908.68
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Solution
The fourth proportional to 86,853.64, 130,278.03 and 36,908.68 is: 55,361.99
Step by Step Solution
- Step 1: Write the proportion equation
86,853.64 : 130,278.03 = 36,908.68 : x - Step 2: Convert to fraction form
86,853.64/130,278.03 = 36,908.68/x - Step 3: Cross multiply
86,853.64x = 130,278.03 × 36,908.68 - Step 4: Simplify right side
86,853.64x = 4,808,390,120.30 - Step 5: Solve for x
x = 4,808,390,120.30/86,853.64 - Step 6: Final answer
x = 55,361.99
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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.