Finding the Fourth Proportional to 81,645,768.80, 122,468,653.20 and 24,138,603.80
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Solution
The fourth proportional to 81,645,768.80, 122,468,653.20 and 24,138,603.80 is: 36,207,905.70
Step by Step Solution
- Step 1: Write the proportion equation
81,645,768.80 : 122,468,653.20 = 24,138,603.80 : x - Step 2: Convert to fraction form
81,645,768.80/122,468,653.20 = 24,138,603.80/x - Step 3: Cross multiply
81,645,768.80x = 122,468,653.20 × 24,138,603.80 - Step 4: Simplify right side
81,645,768.80x = 2,956,222,297,514,402.50 - Step 5: Solve for x
x = 2,956,222,297,514,402.50/81,645,768.80 - Step 6: Final answer
x = 36,207,905.70
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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.