Finding the Fourth Proportional to 76,913,107.20, 115,369,660.80 and 74,225,721.60
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Solution
The fourth proportional to 76,913,107.20, 115,369,660.80 and 74,225,721.60 is: 111,338,582.40
Step by Step Solution
- Step 1: Write the proportion equation
76,913,107.20 : 115,369,660.80 = 74,225,721.60 : x - Step 2: Convert to fraction form
76,913,107.20/115,369,660.80 = 74,225,721.60/x - Step 3: Cross multiply
76,913,107.20x = 115,369,660.80 × 74,225,721.60 - Step 4: Simplify right side
76,913,107.20x = 8,563,396,323,627,232 - Step 5: Solve for x
x = 8,563,396,323,627,232/76,913,107.20 - Step 6: Final answer
x = 111,338,582.40
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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.