Finding the Fourth Proportional to 105,466.25, 145,542.57 and 57,719.49
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Solution
The fourth proportional to 105,466.25, 145,542.57 and 57,719.49 is: 79,652.42
Step by Step Solution
- Step 1: Write the proportion equation
105,466.25 : 145,542.57 = 57,719.49 : x - Step 2: Convert to fraction form
105,466.25/145,542.57 = 57,719.49/x - Step 3: Cross multiply
105,466.25x = 145,542.57 × 57,719.49 - Step 4: Simplify right side
105,466.25x = 8,400,642,476.13 - Step 5: Solve for x
x = 8,400,642,476.13/105,466.25 - Step 6: Final answer
x = 79,652.42
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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.