Finding the Fourth Proportional to 77,145.80, 115,718.70 and 61,593.80
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Solution
The fourth proportional to 77,145.80, 115,718.70 and 61,593.80 is: 92,390.70
Step by Step Solution
- Step 1: Write the proportion equation
77,145.80 : 115,718.70 = 61,593.80 : x - Step 2: Convert to fraction form
77,145.80/115,718.70 = 61,593.80/x - Step 3: Cross multiply
77,145.80x = 115,718.70 × 61,593.80 - Step 4: Simplify right side
77,145.80x = 7,127,554,464.06 - Step 5: Solve for x
x = 7,127,554,464.06/77,145.80 - Step 6: Final answer
x = 92,390.70
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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.