Finding the Fourth Proportional to 98,021.44, 135,248.72 and 57,720.50
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Solution
The fourth proportional to 98,021.44, 135,248.72 and 57,720.50 is: 79,641.99
Step by Step Solution
- Step 1: Write the proportion equation
98,021.44 : 135,248.72 = 57,720.50 : x - Step 2: Convert to fraction form
98,021.44/135,248.72 = 57,720.50/x - Step 3: Cross multiply
98,021.44x = 135,248.72 × 57,720.50 - Step 4: Simplify right side
98,021.44x = 7,806,622,777.91 - Step 5: Solve for x
x = 7,806,622,777.91/98,021.44 - Step 6: Final answer
x = 79,641.99
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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.