Finding the Fourth Proportional to 73,439.76, 101,347.12 and 39,905.76
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Solution
The fourth proportional to 73,439.76, 101,347.12 and 39,905.76 is: 55,070.09
Step by Step Solution
- Step 1: Write the proportion equation
73,439.76 : 101,347.12 = 39,905.76 : x - Step 2: Convert to fraction form
73,439.76/101,347.12 = 39,905.76/x - Step 3: Cross multiply
73,439.76x = 101,347.12 × 39,905.76 - Step 4: Simplify right side
73,439.76x = 4,044,333,847.41 - Step 5: Solve for x
x = 4,044,333,847.41/73,439.76 - Step 6: Final answer
x = 55,070.09
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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.