Finding the Fourth Proportional to 78,541.17, 117,885.57 and 41,128.09
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Solution
The fourth proportional to 78,541.17, 117,885.57 and 41,128.09 is: 61,730.79
Step by Step Solution
- Step 1: Write the proportion equation
78,541.17 : 117,885.57 = 41,128.09 : x - Step 2: Convert to fraction form
78,541.17/117,885.57 = 41,128.09/x - Step 3: Cross multiply
78,541.17x = 117,885.57 × 41,128.09 - Step 4: Simplify right side
78,541.17x = 4,848,408,749.36 - Step 5: Solve for x
x = 4,848,408,749.36/78,541.17 - Step 6: Final answer
x = 61,730.79
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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.