Finding the Fourth Proportional to 78,130.44, 117,201.12 and 38,676.96
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Solution
The fourth proportional to 78,130.44, 117,201.12 and 38,676.96 is: 58,018.14
Step by Step Solution
- Step 1: Write the proportion equation
78,130.44 : 117,201.12 = 38,676.96 : x - Step 2: Convert to fraction form
78,130.44/117,201.12 = 38,676.96/x - Step 3: Cross multiply
78,130.44x = 117,201.12 × 38,676.96 - Step 4: Simplify right side
78,130.44x = 4,532,983,030.20 - Step 5: Solve for x
x = 4,532,983,030.20/78,130.44 - Step 6: Final answer
x = 58,018.14
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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.