Finding the Fourth Proportional to 81,479.72, 122,214.12 and 22,315.88
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Solution
The fourth proportional to 81,479.72, 122,214.12 and 22,315.88 is: 33,472.32
Step by Step Solution
- Step 1: Write the proportion equation
81,479.72 : 122,214.12 = 22,315.88 : x - Step 2: Convert to fraction form
81,479.72/122,214.12 = 22,315.88/x - Step 3: Cross multiply
81,479.72x = 122,214.12 × 22,315.88 - Step 4: Simplify right side
81,479.72x = 2,727,315,636.23 - Step 5: Solve for x
x = 2,727,315,636.23/81,479.72 - Step 6: Final answer
x = 33,472.32
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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.