Finding the Fourth Proportional to 77,709.19, 107,135.44 and 50,805.45
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Solution
The fourth proportional to 77,709.19, 107,135.44 and 50,805.45 is: 70,044.02
Step by Step Solution
- Step 1: Write the proportion equation
77,709.19 : 107,135.44 = 50,805.45 : x - Step 2: Convert to fraction form
77,709.19/107,135.44 = 50,805.45/x - Step 3: Cross multiply
77,709.19x = 107,135.44 × 50,805.45 - Step 4: Simplify right side
77,709.19x = 5,443,064,240.15 - Step 5: Solve for x
x = 5,443,064,240.15/77,709.19 - Step 6: Final answer
x = 70,044.02
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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.