Finding the Fourth Proportional to 98,782.24, 136,311.76 and 56,338.08
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Solution
The fourth proportional to 98,782.24, 136,311.76 and 56,338.08 is: 77,742.14
Step by Step Solution
- Step 1: Write the proportion equation
98,782.24 : 136,311.76 = 56,338.08 : x - Step 2: Convert to fraction form
98,782.24/136,311.76 = 56,338.08/x - Step 3: Cross multiply
98,782.24x = 136,311.76 × 56,338.08 - Step 4: Simplify right side
98,782.24x = 7,679,542,839.82 - Step 5: Solve for x
x = 7,679,542,839.82/98,782.24 - Step 6: Final answer
x = 77,742.14
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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.