Finding the Fourth Proportional to 90,887,836.62, 125,425,674.81 and 49,634,727.78
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Solution
The fourth proportional to 90,887,836.62, 125,425,674.81 and 49,634,727.78 is: 68,496,175.70
Step by Step Solution
- Step 1: Write the proportion equation
90,887,836.62 : 125,425,674.81 = 49,634,727.78 : x - Step 2: Convert to fraction form
90,887,836.62/125,425,674.81 = 49,634,727.78/x - Step 3: Cross multiply
90,887,836.62x = 125,425,674.81 × 49,634,727.78 - Step 4: Simplify right side
90,887,836.62x = 6,225,469,225,817,153 - Step 5: Solve for x
x = 6,225,469,225,817,153/90,887,836.62 - Step 6: Final answer
x = 68,496,175.70
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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.