Finding the Fourth Proportional to 73,905.25, 101,989.21 and 39,913.74
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Solution
The fourth proportional to 73,905.25, 101,989.21 and 39,913.74 is: 55,080.95
Step by Step Solution
- Step 1: Write the proportion equation
73,905.25 : 101,989.21 = 39,913.74 : x - Step 2: Convert to fraction form
73,905.25/101,989.21 = 39,913.74/x - Step 3: Cross multiply
73,905.25x = 101,989.21 × 39,913.74 - Step 4: Simplify right side
73,905.25x = 4,070,770,860.64 - Step 5: Solve for x
x = 4,070,770,860.64/73,905.25 - Step 6: Final answer
x = 55,080.95
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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.