Finding the Fourth Proportional to 31,658,939.09, 47,496,596.13 and 18,539,436.71
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Solution
The fourth proportional to 31,658,939.09, 47,496,596.13 and 18,539,436.71 is: 27,813,949.65
Step by Step Solution
- Step 1: Write the proportion equation
31,658,939.09 : 47,496,596.13 = 18,539,436.71 : x - Step 2: Convert to fraction form
31,658,939.09/47,496,596.13 = 18,539,436.71/x - Step 3: Cross multiply
31,658,939.09x = 47,496,596.13 × 18,539,436.71 - Step 4: Simplify right side
31,658,939.09x = 880,560,138,011,307.38 - Step 5: Solve for x
x = 880,560,138,011,307.38/31,658,939.09 - Step 6: Final answer
x = 27,813,949.65
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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.