Finding the Fourth Proportional to 74,685.30, 102,923.94 and 53,427.66
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Solution
The fourth proportional to 74,685.30, 102,923.94 and 53,427.66 is: 73,628.75
Step by Step Solution
- Step 1: Write the proportion equation
74,685.30 : 102,923.94 = 53,427.66 : x - Step 2: Convert to fraction form
74,685.30/102,923.94 = 53,427.66/x - Step 3: Cross multiply
74,685.30x = 102,923.94 × 53,427.66 - Step 4: Simplify right side
74,685.30x = 5,498,985,272.18 - Step 5: Solve for x
x = 5,498,985,272.18/74,685.30 - Step 6: Final answer
x = 73,628.75
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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.