Finding the Fourth Proportional to 98,407.98, 135,645.84 and 66,521.52
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Solution
The fourth proportional to 98,407.98, 135,645.84 and 66,521.52 is: 91,693.45
Step by Step Solution
- Step 1: Write the proportion equation
98,407.98 : 135,645.84 = 66,521.52 : x - Step 2: Convert to fraction form
98,407.98/135,645.84 = 66,521.52/x - Step 3: Cross multiply
98,407.98x = 135,645.84 × 66,521.52 - Step 4: Simplify right side
98,407.98x = 9,023,367,458.48 - Step 5: Solve for x
x = 9,023,367,458.48/98,407.98 - Step 6: Final answer
x = 91,693.45
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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.