Finding the Fourth Proportional to 77,642.80, 107,115.96 and 48,953.02
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Solution
The fourth proportional to 77,642.80, 107,115.96 and 48,953.02 is: 67,535.56
Step by Step Solution
- Step 1: Write the proportion equation
77,642.80 : 107,115.96 = 48,953.02 : x - Step 2: Convert to fraction form
77,642.80/107,115.96 = 48,953.02/x - Step 3: Cross multiply
77,642.80x = 107,115.96 × 48,953.02 - Step 4: Simplify right side
77,642.80x = 5,243,649,732.20 - Step 5: Solve for x
x = 5,243,649,732.20/77,642.80 - Step 6: Final answer
x = 67,535.56
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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.