Finding the Fourth Proportional to 76,758.24, 105,975.36 and 62,644.80
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Solution
The fourth proportional to 76,758.24, 105,975.36 and 62,644.80 is: 86,489.81
Step by Step Solution
- Step 1: Write the proportion equation
76,758.24 : 105,975.36 = 62,644.80 : x - Step 2: Convert to fraction form
76,758.24/105,975.36 = 62,644.80/x - Step 3: Cross multiply
76,758.24x = 105,975.36 × 62,644.80 - Step 4: Simplify right side
76,758.24x = 6,638,805,232.13 - Step 5: Solve for x
x = 6,638,805,232.13/76,758.24 - Step 6: Final answer
x = 86,489.81
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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.