Finding the Fourth Proportional to 80,774,992.80, 121,162,489.20 and 48,526,365.60
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Solution
The fourth proportional to 80,774,992.80, 121,162,489.20 and 48,526,365.60 is: 72,789,548.40
Step by Step Solution
- Step 1: Write the proportion equation
80,774,992.80 : 121,162,489.20 = 48,526,365.60 : x - Step 2: Convert to fraction form
80,774,992.80/121,162,489.20 = 48,526,365.60/x - Step 3: Cross multiply
80,774,992.80x = 121,162,489.20 × 48,526,365.60 - Step 4: Simplify right side
80,774,992.80x = 5,879,575,247,925,252 - Step 5: Solve for x
x = 5,879,575,247,925,252/80,774,992.80 - Step 6: Final answer
x = 72,789,548.40
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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.