Finding the Fourth Proportional to 98,378.10, 135,758.79 and 55,359.99
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Solution
The fourth proportional to 98,378.10, 135,758.79 and 55,359.99 is: 76,395.10
Step by Step Solution
- Step 1: Write the proportion equation
98,378.10 : 135,758.79 = 55,359.99 : x - Step 2: Convert to fraction form
98,378.10/135,758.79 = 55,359.99/x - Step 3: Cross multiply
98,378.10x = 135,758.79 × 55,359.99 - Step 4: Simplify right side
98,378.10x = 7,515,605,256.81 - Step 5: Solve for x
x = 7,515,605,256.81/98,378.10 - Step 6: Final answer
x = 76,395.10
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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.