Finding the Fourth Proportional to 98,479.26, 135,899.64 and 56,036.88
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Solution
The fourth proportional to 98,479.26, 135,899.64 and 56,036.88 is: 77,329.90
Step by Step Solution
- Step 1: Write the proportion equation
98,479.26 : 135,899.64 = 56,036.88 : x - Step 2: Convert to fraction form
98,479.26/135,899.64 = 56,036.88/x - Step 3: Cross multiply
98,479.26x = 135,899.64 × 56,036.88 - Step 4: Simplify right side
98,479.26x = 7,615,391,818.72 - Step 5: Solve for x
x = 7,615,391,818.72/98,479.26 - Step 6: Final answer
x = 77,329.90
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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.