Finding the Fourth Proportional to 84,048,712.38, 115,943,113.44 and 68,385,251.58
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Solution
The fourth proportional to 84,048,712.38, 115,943,113.44 and 68,385,251.58 is: 94,335,757.88
Step by Step Solution
- Step 1: Write the proportion equation
84,048,712.38 : 115,943,113.44 = 68,385,251.58 : x - Step 2: Convert to fraction form
84,048,712.38/115,943,113.44 = 68,385,251.58/x - Step 3: Cross multiply
84,048,712.38x = 115,943,113.44 × 68,385,251.58 - Step 4: Simplify right side
84,048,712.38x = 7,928,798,981,562,879 - Step 5: Solve for x
x = 7,928,798,981,562,879/84,048,712.38 - Step 6: Final answer
x = 94,335,757.88
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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.