Finding the Fourth Proportional to 77,656.18, 107,131.80 and 49,346.68
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Solution
The fourth proportional to 77,656.18, 107,131.80 and 49,346.68 is: 68,076.99
Step by Step Solution
- Step 1: Write the proportion equation
77,656.18 : 107,131.80 = 49,346.68 : x - Step 2: Convert to fraction form
77,656.18/107,131.80 = 49,346.68/x - Step 3: Cross multiply
77,656.18x = 107,131.80 × 49,346.68 - Step 4: Simplify right side
77,656.18x = 5,286,598,652.42 - Step 5: Solve for x
x = 5,286,598,652.42/77,656.18 - Step 6: Final answer
x = 68,076.99
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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.