Finding the Fourth Proportional to 7,135,873.88, 9,847,511.08 and 3,872,687.76
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Solution
The fourth proportional to 7,135,873.88, 9,847,511.08 and 3,872,687.76 is: 5,344,311.89
Step by Step Solution
- Step 1: Write the proportion equation
7,135,873.88 : 9,847,511.08 = 3,872,687.76 : x - Step 2: Convert to fraction form
7,135,873.88/9,847,511.08 = 3,872,687.76/x - Step 3: Cross multiply
7,135,873.88x = 9,847,511.08 × 3,872,687.76 - Step 4: Simplify right side
7,135,873.88x = 38,136,335,616,298.66 - Step 5: Solve for x
x = 38,136,335,616,298.66/7,135,873.88 - Step 6: Final answer
x = 5,344,311.89
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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.