Finding the Fourth Proportional to 73,420.13, 101,319.78 and 39,886.13
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Solution
The fourth proportional to 73,420.13, 101,319.78 and 39,886.13 is: 55,042.86
Step by Step Solution
- Step 1: Write the proportion equation
73,420.13 : 101,319.78 = 39,886.13 : x - Step 2: Convert to fraction form
73,420.13/101,319.78 = 39,886.13/x - Step 3: Cross multiply
73,420.13x = 101,319.78 × 39,886.13 - Step 4: Simplify right side
73,420.13x = 4,041,253,410.05 - Step 5: Solve for x
x = 4,041,253,410.05/73,420.13 - Step 6: Final answer
x = 55,042.86
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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.