Finding the Fourth Proportional to 80,752,139.70, 121,128,209.55 and 46,739,915.70
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Solution
The fourth proportional to 80,752,139.70, 121,128,209.55 and 46,739,915.70 is: 70,109,873.55
Step by Step Solution
- Step 1: Write the proportion equation
80,752,139.70 : 121,128,209.55 = 46,739,915.70 : x - Step 2: Convert to fraction form
80,752,139.70/121,128,209.55 = 46,739,915.70/x - Step 3: Cross multiply
80,752,139.70x = 121,128,209.55 × 46,739,915.70 - Step 4: Simplify right side
80,752,139.70x = 5,661,522,303,258,935 - Step 5: Solve for x
x = 5,661,522,303,258,935/80,752,139.70 - Step 6: Final answer
x = 70,109,873.55
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1.5x scale
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.