Finding the Fourth Proportional to 98,342.85, 135,711.68 and 55,319.09
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Solution
The fourth proportional to 98,342.85, 135,711.68 and 55,319.09 is: 76,339.53
Step by Step Solution
- Step 1: Write the proportion equation
98,342.85 : 135,711.68 = 55,319.09 : x - Step 2: Convert to fraction form
98,342.85/135,711.68 = 55,319.09/x - Step 3: Cross multiply
98,342.85x = 135,711.68 × 55,319.09 - Step 4: Simplify right side
98,342.85x = 7,507,446,702.65 - Step 5: Solve for x
x = 7,507,446,702.65/98,342.85 - Step 6: Final answer
x = 76,339.53
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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.