Finding the Fourth Proportional to 76,781.16, 115,177.26 and 26,855.64
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Solution
The fourth proportional to 76,781.16, 115,177.26 and 26,855.64 is: 40,285.39
Step by Step Solution
- Step 1: Write the proportion equation
76,781.16 : 115,177.26 = 26,855.64 : x - Step 2: Convert to fraction form
76,781.16/115,177.26 = 26,855.64/x - Step 3: Cross multiply
76,781.16x = 115,177.26 × 26,855.64 - Step 4: Simplify right side
76,781.16x = 3,093,159,030.75 - Step 5: Solve for x
x = 3,093,159,030.75/76,781.16 - Step 6: Final answer
x = 40,285.39
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.