Finding the Fourth Proportional to 100,480.14, 138,673.62 and 57,463.63
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Solution
The fourth proportional to 100,480.14, 138,673.62 and 57,463.63 is: 79,306.11
Step by Step Solution
- Step 1: Write the proportion equation
100,480.14 : 138,673.62 = 57,463.63 : x - Step 2: Convert to fraction form
100,480.14/138,673.62 = 57,463.63/x - Step 3: Cross multiply
100,480.14x = 138,673.62 × 57,463.63 - Step 4: Simplify right side
100,480.14x = 7,968,688,897.07 - Step 5: Solve for x
x = 7,968,688,897.07/100,480.14 - Step 6: Final answer
x = 79,306.11
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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.