Finding the Fourth Proportional to 98,130.58, 135,419.81 and 55,104.09
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Solution
The fourth proportional to 98,130.58, 135,419.81 and 55,104.09 is: 76,043.42
Step by Step Solution
- Step 1: Write the proportion equation
98,130.58 : 135,419.81 = 55,104.09 : x - Step 2: Convert to fraction form
98,130.58/135,419.81 = 55,104.09/x - Step 3: Cross multiply
98,130.58x = 135,419.81 × 55,104.09 - Step 4: Simplify right side
98,130.58x = 7,462,184,720.92 - Step 5: Solve for x
x = 7,462,184,720.92/98,130.58 - Step 6: Final answer
x = 76,043.42
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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.