Finding the Fourth Proportional to 68,783.67, 103,175.91 and 31,317.54
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Solution
The fourth proportional to 68,783.67, 103,175.91 and 31,317.54 is: 46,976.49
Step by Step Solution
- Step 1: Write the proportion equation
68,783.67 : 103,175.91 = 31,317.54 : x - Step 2: Convert to fraction form
68,783.67/103,175.91 = 31,317.54/x - Step 3: Cross multiply
68,783.67x = 103,175.91 × 31,317.54 - Step 4: Simplify right side
68,783.67x = 3,231,215,688.46 - Step 5: Solve for x
x = 3,231,215,688.46/68,783.67 - Step 6: Final answer
x = 46,976.49
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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.