Finding the Fourth Proportional to 74,861,611.20, 112,292,416.80 and 18,127,915.20
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Solution
The fourth proportional to 74,861,611.20, 112,292,416.80 and 18,127,915.20 is: 27,191,872.80
Step by Step Solution
- Step 1: Write the proportion equation
74,861,611.20 : 112,292,416.80 = 18,127,915.20 : x - Step 2: Convert to fraction form
74,861,611.20/112,292,416.80 = 18,127,915.20/x - Step 3: Cross multiply
74,861,611.20x = 112,292,416.80 × 18,127,915.20 - Step 4: Simplify right side
74,861,611.20x = 2,035,627,409,353,455.25 - Step 5: Solve for x
x = 2,035,627,409,353,455.25/74,861,611.20 - Step 6: Final answer
x = 27,191,872.80
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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.