Finding the Fourth Proportional to 70,449,410.20, 97,220,890.32 and 39,508,915.20
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Solution
The fourth proportional to 70,449,410.20, 97,220,890.32 and 39,508,915.20 is: 54,522,697.92
Step by Step Solution
- Step 1: Write the proportion equation
70,449,410.20 : 97,220,890.32 = 39,508,915.20 : x - Step 2: Convert to fraction form
70,449,410.20/97,220,890.32 = 39,508,915.20/x - Step 3: Cross multiply
70,449,410.20x = 97,220,890.32 × 39,508,915.20 - Step 4: Simplify right side
70,449,410.20x = 3,841,091,911,321,381 - Step 5: Solve for x
x = 3,841,091,911,321,381/70,449,410.20 - Step 6: Final answer
x = 54,522,697.92
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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.