Finding the Fourth Proportional to 79,351.76, 109,507.08 and 43,539.68
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Solution
The fourth proportional to 79,351.76, 109,507.08 and 43,539.68 is: 60,085.66
Step by Step Solution
- Step 1: Write the proportion equation
79,351.76 : 109,507.08 = 43,539.68 : x - Step 2: Convert to fraction form
79,351.76/109,507.08 = 43,539.68/x - Step 3: Cross multiply
79,351.76x = 109,507.08 × 43,539.68 - Step 4: Simplify right side
79,351.76x = 4,767,903,220.93 - Step 5: Solve for x
x = 4,767,903,220.93/79,351.76 - Step 6: Final answer
x = 60,085.66
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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.