Finding the Fourth Proportional to 39,858,086.70, 59,787,130.05 and 12,931,742.70
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Solution
The fourth proportional to 39,858,086.70, 59,787,130.05 and 12,931,742.70 is: 19,397,614.05
Step by Step Solution
- Step 1: Write the proportion equation
39,858,086.70 : 59,787,130.05 = 12,931,742.70 : x - Step 2: Convert to fraction form
39,858,086.70/59,787,130.05 = 12,931,742.70/x - Step 3: Cross multiply
39,858,086.70x = 59,787,130.05 × 12,931,742.70 - Step 4: Simplify right side
39,858,086.70x = 773,151,782,578,038 - Step 5: Solve for x
x = 773,151,782,578,038/39,858,086.70 - Step 6: Final answer
x = 19,397,614.05
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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.