Finding the Fourth Proportional to 80,913,722.40, 121,370,583.60 and 53,703,943.20
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Solution
The fourth proportional to 80,913,722.40, 121,370,583.60 and 53,703,943.20 is: 80,555,914.80
Step by Step Solution
- Step 1: Write the proportion equation
80,913,722.40 : 121,370,583.60 = 53,703,943.20 : x - Step 2: Convert to fraction form
80,913,722.40/121,370,583.60 = 53,703,943.20/x - Step 3: Cross multiply
80,913,722.40x = 121,370,583.60 × 53,703,943.20 - Step 4: Simplify right side
80,913,722.40x = 6,518,078,927,805,252 - Step 5: Solve for x
x = 6,518,078,927,805,252/80,913,722.40 - Step 6: Final answer
x = 80,555,914.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.