Finding the Fourth Proportional to 77,528.08, 106,989.48 and 43,991.44
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Solution
The fourth proportional to 77,528.08, 106,989.48 and 43,991.44 is: 60,708.60
Step by Step Solution
- Step 1: Write the proportion equation
77,528.08 : 106,989.48 = 43,991.44 : x - Step 2: Convert to fraction form
77,528.08/106,989.48 = 43,991.44/x - Step 3: Cross multiply
77,528.08x = 106,989.48 × 43,991.44 - Step 4: Simplify right side
77,528.08x = 4,706,621,290.05 - Step 5: Solve for x
x = 4,706,621,290.05/77,528.08 - Step 6: Final answer
x = 60,708.60
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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.