Finding the Fourth Proportional to 38,885,672.36, 53,663,762.58 and 22,365,770.42
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Solution
The fourth proportional to 38,885,672.36, 53,663,762.58 and 22,365,770.42 is: 30,865,645.90
Step by Step Solution
- Step 1: Write the proportion equation
38,885,672.36 : 53,663,762.58 = 22,365,770.42 : x - Step 2: Convert to fraction form
38,885,672.36/53,663,762.58 = 22,365,770.42/x - Step 3: Cross multiply
38,885,672.36x = 53,663,762.58 × 22,365,770.42 - Step 4: Simplify right side
38,885,672.36x = 1,200,231,393,737,667 - Step 5: Solve for x
x = 1,200,231,393,737,667/38,885,672.36 - Step 6: Final answer
x = 30,865,645.90
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1.5x scale
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.