Finding the Fourth Proportional to 98,313.99, 135,684.84 and 55,878.90
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Solution
The fourth proportional to 98,313.99, 135,684.84 and 55,878.90 is: 77,119.44
Step by Step Solution
- Step 1: Write the proportion equation
98,313.99 : 135,684.84 = 55,878.90 : x - Step 2: Convert to fraction form
98,313.99/135,684.84 = 55,878.90/x - Step 3: Cross multiply
98,313.99x = 135,684.84 × 55,878.90 - Step 4: Simplify right side
98,313.99x = 7,581,919,605.88 - Step 5: Solve for x
x = 7,581,919,605.88/98,313.99 - Step 6: Final answer
x = 77,119.44
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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.