Finding the Fourth Proportional to 83,861.80, 115,668.81 and 48,038.74
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Solution
The fourth proportional to 83,861.80, 115,668.81 and 48,038.74 is: 66,258.82
Step by Step Solution
- Step 1: Write the proportion equation
83,861.80 : 115,668.81 = 48,038.74 : x - Step 2: Convert to fraction form
83,861.80/115,668.81 = 48,038.74/x - Step 3: Cross multiply
83,861.80x = 115,668.81 × 48,038.74 - Step 4: Simplify right side
83,861.80x = 5,556,583,600.53 - Step 5: Solve for x
x = 5,556,583,600.53/83,861.80 - Step 6: Final answer
x = 66,258.82
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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.