Finding the Fourth Proportional to 75,155.18, 103,664.21 and 48,331.62
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Solution
The fourth proportional to 75,155.18, 103,664.21 and 48,331.62 is: 66,665.52
Step by Step Solution
- Step 1: Write the proportion equation
75,155.18 : 103,664.21 = 48,331.62 : x - Step 2: Convert to fraction form
75,155.18/103,664.21 = 48,331.62/x - Step 3: Cross multiply
75,155.18x = 103,664.21 × 48,331.62 - Step 4: Simplify right side
75,155.18x = 5,010,258,963.66 - Step 5: Solve for x
x = 5,010,258,963.66/75,155.18 - Step 6: Final answer
x = 66,665.52
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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.