Finding the Fourth Proportional to 75,372.68, 113,040.12 and 31,011.68
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Solution
The fourth proportional to 75,372.68, 113,040.12 and 31,011.68 is: 46,509.74
Step by Step Solution
- Step 1: Write the proportion equation
75,372.68 : 113,040.12 = 31,011.68 : x - Step 2: Convert to fraction form
75,372.68/113,040.12 = 31,011.68/x - Step 3: Cross multiply
75,372.68x = 113,040.12 × 31,011.68 - Step 4: Simplify right side
75,372.68x = 3,505,564,028.60 - Step 5: Solve for x
x = 3,505,564,028.60/75,372.68 - Step 6: Final answer
x = 46,509.74
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.