Finding the Fourth Proportional to 77,029.80, 115,544.70 and 72,655.80
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Solution
The fourth proportional to 77,029.80, 115,544.70 and 72,655.80 is: 108,983.70
Step by Step Solution
- Step 1: Write the proportion equation
77,029.80 : 115,544.70 = 72,655.80 : x - Step 2: Convert to fraction form
77,029.80/115,544.70 = 72,655.80/x - Step 3: Cross multiply
77,029.80x = 115,544.70 × 72,655.80 - Step 4: Simplify right side
77,029.80x = 8,394,992,614.26 - Step 5: Solve for x
x = 8,394,992,614.26/77,029.80 - Step 6: Final answer
x = 108,983.70
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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.