Finding the Fourth Proportional to 31,473,343.13, 47,207,847.74 and 19,344,678.53
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Solution
The fourth proportional to 31,473,343.13, 47,207,847.74 and 19,344,678.53 is: 29,015,685.90
Step by Step Solution
- Step 1: Write the proportion equation
31,473,343.13 : 47,207,847.74 = 19,344,678.53 : x - Step 2: Convert to fraction form
31,473,343.13/47,207,847.74 = 19,344,678.53/x - Step 3: Cross multiply
31,473,343.13x = 47,207,847.74 × 19,344,678.53 - Step 4: Simplify right side
31,473,343.13x = 913,220,638,290,724.25 - Step 5: Solve for x
x = 913,220,638,290,724.25/31,473,343.13 - Step 6: Final answer
x = 29,015,685.90
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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.