Finding the Fourth Proportional to 28,608,765.92, 42,913,135.20 and 8,414,007.68
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Solution
The fourth proportional to 28,608,765.92, 42,913,135.20 and 8,414,007.68 is: 12,621,007.50
Step by Step Solution
- Step 1: Write the proportion equation
28,608,765.92 : 42,913,135.20 = 8,414,007.68 : x - Step 2: Convert to fraction form
28,608,765.92/42,913,135.20 = 8,414,007.68/x - Step 3: Cross multiply
28,608,765.92x = 42,913,135.20 × 8,414,007.68 - Step 4: Simplify right side
28,608,765.92x = 361,071,449,145,678.38 - Step 5: Solve for x
x = 361,071,449,145,678.38/28,608,765.92 - Step 6: Final answer
x = 12,621,007.50
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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.