Finding the Fourth Proportional to 77,913.46, 107,578.16 and 47,739.99
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Solution
The fourth proportional to 77,913.46, 107,578.16 and 47,739.99 is: 65,916.47
Step by Step Solution
- Step 1: Write the proportion equation
77,913.46 : 107,578.16 = 47,739.99 : x - Step 2: Convert to fraction form
77,913.46/107,578.16 = 47,739.99/x - Step 3: Cross multiply
77,913.46x = 107,578.16 × 47,739.99 - Step 4: Simplify right side
77,913.46x = 5,135,780,282.62 - Step 5: Solve for x
x = 5,135,780,282.62/77,913.46 - Step 6: Final answer
x = 65,916.47
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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.