Finding the Fourth Proportional to 71,286,008.68, 98,372,060.58 and 38,690,260.84
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Solution
The fourth proportional to 71,286,008.68, 98,372,060.58 and 38,690,260.84 is: 53,391,131.78
Step by Step Solution
- Step 1: Write the proportion equation
71,286,008.68 : 98,372,060.58 = 38,690,260.84 : x - Step 2: Convert to fraction form
71,286,008.68/98,372,060.58 = 38,690,260.84/x - Step 3: Cross multiply
71,286,008.68x = 98,372,060.58 × 38,690,260.84 - Step 4: Simplify right side
71,286,008.68x = 3,806,040,683,208,482 - Step 5: Solve for x
x = 3,806,040,683,208,482/71,286,008.68 - Step 6: Final answer
x = 53,391,131.78
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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.