Finding the Fourth Proportional to 76,380,319.86, 105,407,122.95 and 47,028,586.38
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Solution
The fourth proportional to 76,380,319.86, 105,407,122.95 and 47,028,586.38 is: 64,900,853.99
Step by Step Solution
- Step 1: Write the proportion equation
76,380,319.86 : 105,407,122.95 = 47,028,586.38 : x - Step 2: Convert to fraction form
76,380,319.86/105,407,122.95 = 47,028,586.38/x - Step 3: Cross multiply
76,380,319.86x = 105,407,122.95 × 47,028,586.38 - Step 4: Simplify right side
76,380,319.86x = 4,957,147,986,721,356 - Step 5: Solve for x
x = 4,957,147,986,721,356/76,380,319.86 - Step 6: Final answer
x = 64,900,853.99
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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.