Finding the Fourth Proportional to 73,316.80, 101,178.36 and 39,782.80
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Solution
The fourth proportional to 73,316.80, 101,178.36 and 39,782.80 is: 54,900.90
Step by Step Solution
- Step 1: Write the proportion equation
73,316.80 : 101,178.36 = 39,782.80 : x - Step 2: Convert to fraction form
73,316.80/101,178.36 = 39,782.80/x - Step 3: Cross multiply
73,316.80x = 101,178.36 × 39,782.80 - Step 4: Simplify right side
73,316.80x = 4,025,158,460.21 - Step 5: Solve for x
x = 4,025,158,460.21/73,316.80 - Step 6: Final answer
x = 54,900.90
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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.