Finding the Fourth Proportional to 43,523,638.40, 65,287,915.20 and 13,232,489.60
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Solution
The fourth proportional to 43,523,638.40, 65,287,915.20 and 13,232,489.60 is: 19,849,481.58
Step by Step Solution
- Step 1: Write the proportion equation
43,523,638.40 : 65,287,915.20 = 13,232,489.60 : x - Step 2: Convert to fraction form
43,523,638.40/65,287,915.20 = 13,232,489.60/x - Step 3: Cross multiply
43,523,638.40x = 65,287,915.20 × 13,232,489.60 - Step 4: Simplify right side
43,523,638.40x = 863,921,658,889,681.88 - Step 5: Solve for x
x = 863,921,658,889,681.88/43,523,638.40 - Step 6: Final answer
x = 19,849,481.58
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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.