Finding the Fourth Proportional to 101,304.49, 139,829.40 and 66,874.42
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Solution
The fourth proportional to 101,304.49, 139,829.40 and 66,874.42 is: 92,305.99
Step by Step Solution
- Step 1: Write the proportion equation
101,304.49 : 139,829.40 = 66,874.42 : x - Step 2: Convert to fraction form
101,304.49/139,829.40 = 66,874.42/x - Step 3: Cross multiply
101,304.49x = 139,829.40 × 66,874.42 - Step 4: Simplify right side
101,304.49x = 9,351,010,489.41 - Step 5: Solve for x
x = 9,351,010,489.41/101,304.49 - Step 6: Final answer
x = 92,305.99
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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.