Finding the Fourth Proportional to 81,233.24, 121,837.26 and 31,336.70
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Solution
The fourth proportional to 81,233.24, 121,837.26 and 31,336.70 is: 47,000.19
Step by Step Solution
- Step 1: Write the proportion equation
81,233.24 : 121,837.26 = 31,336.70 : x - Step 2: Convert to fraction form
81,233.24/121,837.26 = 31,336.70/x - Step 3: Cross multiply
81,233.24x = 121,837.26 × 31,336.70 - Step 4: Simplify right side
81,233.24x = 3,817,977,665.44 - Step 5: Solve for x
x = 3,817,977,665.44/81,233.24 - Step 6: Final answer
x = 47,000.19
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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.