Finding the Fourth Proportional to 86,861,356.08, 119,915,208.72 and 66,971,680.80
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Solution
The fourth proportional to 86,861,356.08, 119,915,208.72 and 66,971,680.80 is: 92,456,800.63
Step by Step Solution
- Step 1: Write the proportion equation
86,861,356.08 : 119,915,208.72 = 66,971,680.80 : x - Step 2: Convert to fraction form
86,861,356.08/119,915,208.72 = 66,971,680.80/x - Step 3: Cross multiply
86,861,356.08x = 119,915,208.72 × 66,971,680.80 - Step 4: Simplify right side
86,861,356.08x = 8,030,923,081,461,216 - Step 5: Solve for x
x = 8,030,923,081,461,216/86,861,356.08 - Step 6: Final answer
x = 92,456,800.63
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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.