Finding the Fourth Proportional to 98,372.64, 135,722.16 and 58,072.80
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Solution
The fourth proportional to 98,372.64, 135,722.16 and 58,072.80 is: 80,121.52
Step by Step Solution
- Step 1: Write the proportion equation
98,372.64 : 135,722.16 = 58,072.80 : x - Step 2: Convert to fraction form
98,372.64/135,722.16 = 58,072.80/x - Step 3: Cross multiply
98,372.64x = 135,722.16 × 58,072.80 - Step 4: Simplify right side
98,372.64x = 7,881,765,853.25 - Step 5: Solve for x
x = 7,881,765,853.25/98,372.64 - Step 6: Final answer
x = 80,121.52
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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.