Finding the Fourth Proportional to 74,739.36, 103,122.12 and 44,505.28
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Solution
The fourth proportional to 74,739.36, 103,122.12 and 44,505.28 is: 61,406.45
Step by Step Solution
- Step 1: Write the proportion equation
74,739.36 : 103,122.12 = 44,505.28 : x - Step 2: Convert to fraction form
74,739.36/103,122.12 = 44,505.28/x - Step 3: Cross multiply
74,739.36x = 103,122.12 × 44,505.28 - Step 4: Simplify right side
74,739.36x = 4,589,478,824.79 - Step 5: Solve for x
x = 4,589,478,824.79/74,739.36 - Step 6: Final answer
x = 61,406.45
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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.