Finding the Fourth Proportional to 105,368.24, 145,408.56 and 57,621.58
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Solution
The fourth proportional to 105,368.24, 145,408.56 and 57,621.58 is: 79,517.99
Step by Step Solution
- Step 1: Write the proportion equation
105,368.24 : 145,408.56 = 57,621.58 : x - Step 2: Convert to fraction form
105,368.24/145,408.56 = 57,621.58/x - Step 3: Cross multiply
105,368.24x = 145,408.56 × 57,621.58 - Step 4: Simplify right side
105,368.24x = 8,378,670,245.68 - Step 5: Solve for x
x = 8,378,670,245.68/105,368.24 - Step 6: Final answer
x = 79,517.99
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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.