Finding the Fourth Proportional to 85,395.74, 117,823.14 and 55,170.05
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Solution
The fourth proportional to 85,395.74, 117,823.14 and 55,170.05 is: 76,119.82
Step by Step Solution
- Step 1: Write the proportion equation
85,395.74 : 117,823.14 = 55,170.05 : x - Step 2: Convert to fraction form
85,395.74/117,823.14 = 55,170.05/x - Step 3: Cross multiply
85,395.74x = 117,823.14 × 55,170.05 - Step 4: Simplify right side
85,395.74x = 6,500,307,935.84 - Step 5: Solve for x
x = 6,500,307,935.84/85,395.74 - Step 6: Final answer
x = 76,119.82
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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.