Finding the Fourth Proportional to 77,711.24, 107,231.93 and 49,020.07
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Solution
The fourth proportional to 77,711.24, 107,231.93 and 49,020.07 is: 67,641.65
Step by Step Solution
- Step 1: Write the proportion equation
77,711.24 : 107,231.93 = 49,020.07 : x - Step 2: Convert to fraction form
77,711.24/107,231.93 = 49,020.07/x - Step 3: Cross multiply
77,711.24x = 107,231.93 × 49,020.07 - Step 4: Simplify right side
77,711.24x = 5,256,516,860.36 - Step 5: Solve for x
x = 5,256,516,860.36/77,711.24 - Step 6: Final answer
x = 67,641.65
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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.