Finding the Fourth Proportional to 112,615.48, 155,406.93 and 61,627.99
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Solution
The fourth proportional to 112,615.48, 155,406.93 and 61,627.99 is: 85,045.30
Step by Step Solution
- Step 1: Write the proportion equation
112,615.48 : 155,406.93 = 61,627.99 : x - Step 2: Convert to fraction form
112,615.48/155,406.93 = 61,627.99/x - Step 3: Cross multiply
112,615.48x = 155,406.93 × 61,627.99 - Step 4: Simplify right side
112,615.48x = 9,577,416,727.97 - Step 5: Solve for x
x = 9,577,416,727.97/112,615.48 - Step 6: Final answer
x = 85,045.30
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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.