Finding the Fourth Proportional to 98,855.68, 136,420.16 and 53,532.62
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Solution
The fourth proportional to 98,855.68, 136,420.16 and 53,532.62 is: 73,874.65
Step by Step Solution
- Step 1: Write the proportion equation
98,855.68 : 136,420.16 = 53,532.62 : x - Step 2: Convert to fraction form
98,855.68/136,420.16 = 53,532.62/x - Step 3: Cross multiply
98,855.68x = 136,420.16 × 53,532.62 - Step 4: Simplify right side
98,855.68x = 7,302,928,317.96 - Step 5: Solve for x
x = 7,302,928,317.96/98,855.68 - Step 6: Final answer
x = 73,874.65
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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.