Finding the Fourth Proportional to 72,465.20, 100,001.99 and 40,634.12
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Solution
The fourth proportional to 72,465.20, 100,001.99 and 40,634.12 is: 56,075.09
Step by Step Solution
- Step 1: Write the proportion equation
72,465.20 : 100,001.99 = 40,634.12 : x - Step 2: Convert to fraction form
72,465.20/100,001.99 = 40,634.12/x - Step 3: Cross multiply
72,465.20x = 100,001.99 × 40,634.12 - Step 4: Simplify right side
72,465.20x = 4,063,492,861.90 - Step 5: Solve for x
x = 4,063,492,861.90/72,465.20 - Step 6: Final answer
x = 56,075.09
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.