Finding the Fourth Proportional to 71,169,276.80, 106,753,915.20 and 42,447,843.20
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Solution
The fourth proportional to 71,169,276.80, 106,753,915.20 and 42,447,843.20 is: 63,671,764.80
Step by Step Solution
- Step 1: Write the proportion equation
71,169,276.80 : 106,753,915.20 = 42,447,843.20 : x - Step 2: Convert to fraction form
71,169,276.80/106,753,915.20 = 42,447,843.20/x - Step 3: Cross multiply
71,169,276.80x = 106,753,915.20 × 42,447,843.20 - Step 4: Simplify right side
71,169,276.80x = 4,531,473,453,395,697 - Step 5: Solve for x
x = 4,531,473,453,395,697/71,169,276.80 - Step 6: Final answer
x = 63,671,764.80
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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.