Finding the Fourth Proportional to 98,310.96, 135,617.40 and 66,490.56
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Solution
The fourth proportional to 98,310.96, 135,617.40 and 66,490.56 is: 91,721.99
Step by Step Solution
- Step 1: Write the proportion equation
98,310.96 : 135,617.40 = 66,490.56 : x - Step 2: Convert to fraction form
98,310.96/135,617.40 = 66,490.56/x - Step 3: Cross multiply
98,310.96x = 135,617.40 × 66,490.56 - Step 4: Simplify right side
98,310.96x = 9,017,276,871.74 - Step 5: Solve for x
x = 9,017,276,871.74/98,310.96 - Step 6: Final answer
x = 91,721.99
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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.