Finding the Fourth Proportional to 71,286,007.68, 98,372,059.20 and 38,690,259.84
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Solution
The fourth proportional to 71,286,007.68, 98,372,059.20 and 38,690,259.84 is: 53,391,130.40
Step by Step Solution
- Step 1: Write the proportion equation
71,286,007.68 : 98,372,059.20 = 38,690,259.84 : x - Step 2: Convert to fraction form
71,286,007.68/98,372,059.20 = 38,690,259.84/x - Step 3: Cross multiply
71,286,007.68x = 98,372,059.20 × 38,690,259.84 - Step 4: Simplify right side
71,286,007.68x = 3,806,040,531,443,863 - Step 5: Solve for x
x = 3,806,040,531,443,863/71,286,007.68 - Step 6: Final answer
x = 53,391,130.40
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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.