Finding the Fourth Proportional to 74,683.30, 102,921.18 and 53,425.66
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Solution
The fourth proportional to 74,683.30, 102,921.18 and 53,425.66 is: 73,625.99
Step by Step Solution
- Step 1: Write the proportion equation
74,683.30 : 102,921.18 = 53,425.66 : x - Step 2: Convert to fraction form
74,683.30/102,921.18 = 53,425.66/x - Step 3: Cross multiply
74,683.30x = 102,921.18 × 53,425.66 - Step 4: Simplify right side
74,683.30x = 5,498,631,969.48 - Step 5: Solve for x
x = 5,498,631,969.48/74,683.30 - Step 6: Final answer
x = 73,625.99
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1.5x scale
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.