Finding the Fourth Proportional to 77,869.08, 107,443.26 and 49,564.44
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Solution
The fourth proportional to 77,869.08, 107,443.26 and 49,564.44 is: 68,388.70
Step by Step Solution
- Step 1: Write the proportion equation
77,869.08 : 107,443.26 = 49,564.44 : x - Step 2: Convert to fraction form
77,869.08/107,443.26 = 49,564.44/x - Step 3: Cross multiply
77,869.08x = 107,443.26 × 49,564.44 - Step 4: Simplify right side
77,869.08x = 5,325,365,013.67 - Step 5: Solve for x
x = 5,325,365,013.67/77,869.08 - Step 6: Final answer
x = 68,388.70
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1.5x scale
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.