Finding the Fourth Proportional to 77,387.09, 106,754.87 and 50,545.31
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Solution
The fourth proportional to 77,387.09, 106,754.87 and 50,545.31 is: 69,726.85
Step by Step Solution
- Step 1: Write the proportion equation
77,387.09 : 106,754.87 = 50,545.31 : x - Step 2: Convert to fraction form
77,387.09/106,754.87 = 50,545.31/x - Step 3: Cross multiply
77,387.09x = 106,754.87 × 50,545.31 - Step 4: Simplify right side
77,387.09x = 5,395,957,590.75 - Step 5: Solve for x
x = 5,395,957,590.75/77,387.09 - Step 6: Final answer
x = 69,726.85
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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.