Finding the Fourth Proportional to 7,157,311.92, 9,877,363.56 and 4,102,117.20
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Solution
The fourth proportional to 7,157,311.92, 9,877,363.56 and 4,102,117.20 is: 5,661,078.27
Step by Step Solution
- Step 1: Write the proportion equation
7,157,311.92 : 9,877,363.56 = 4,102,117.20 : x - Step 2: Convert to fraction form
7,157,311.92/9,877,363.56 = 4,102,117.20/x - Step 3: Cross multiply
7,157,311.92x = 9,877,363.56 × 4,102,117.20 - Step 4: Simplify right side
7,157,311.92x = 40,518,102,950,129.23 - Step 5: Solve for x
x = 40,518,102,950,129.23/7,157,311.92 - Step 6: Final answer
x = 5,661,078.27
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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.