Finding the Fourth Proportional to 81,430.92, 122,225.22 and 39,340.62
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Solution
The fourth proportional to 81,430.92, 122,225.22 and 39,340.62 is: 59,049.02
Step by Step Solution
- Step 1: Write the proportion equation
81,430.92 : 122,225.22 = 39,340.62 : x - Step 2: Convert to fraction form
81,430.92/122,225.22 = 39,340.62/x - Step 3: Cross multiply
81,430.92x = 122,225.22 × 39,340.62 - Step 4: Simplify right side
81,430.92x = 4,808,415,934.44 - Step 5: Solve for x
x = 4,808,415,934.44/81,430.92 - Step 6: Final answer
x = 59,049.02
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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.