Finding the Fourth Proportional to 80,852,005.30, 121,278,007.95 and 74,616,430.90
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Solution
The fourth proportional to 80,852,005.30, 121,278,007.95 and 74,616,430.90 is: 111,924,646.35
Step by Step Solution
- Step 1: Write the proportion equation
80,852,005.30 : 121,278,007.95 = 74,616,430.90 : x - Step 2: Convert to fraction form
80,852,005.30/121,278,007.95 = 74,616,430.90/x - Step 3: Cross multiply
80,852,005.30x = 121,278,007.95 × 74,616,430.90 - Step 4: Simplify right side
80,852,005.30x = 9,049,332,099,890,826 - Step 5: Solve for x
x = 9,049,332,099,890,826/80,852,005.30 - Step 6: Final answer
x = 111,924,646.35
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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.