Finding the Fourth Proportional to 81,635.54, 122,430.11 and 31,704.98
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Solution
The fourth proportional to 81,635.54, 122,430.11 and 31,704.98 is: 47,548.45
Step by Step Solution
- Step 1: Write the proportion equation
81,635.54 : 122,430.11 = 31,704.98 : x - Step 2: Convert to fraction form
81,635.54/122,430.11 = 31,704.98/x - Step 3: Cross multiply
81,635.54x = 122,430.11 × 31,704.98 - Step 4: Simplify right side
81,635.54x = 3,881,643,418.27 - Step 5: Solve for x
x = 3,881,643,418.27/81,635.54 - Step 6: Final answer
x = 47,548.45
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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.