Finding the Fourth Proportional to 71,539,123,232, 98,721,115,768.70 and 38,985,645,608.94
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Solution
The fourth proportional to 71,539,123,232, 98,721,115,768.70 and 38,985,645,608.94 is: 53,798,624,579.12
Step by Step Solution
- Step 1: Write the proportion equation
71,539,123,232 : 98,721,115,768.70 = 38,985,645,608.94 : x - Step 2: Convert to fraction form
71,539,123,232/98,721,115,768.70 = 38,985,645,608.94/x - Step 3: Cross multiply
71,539,123,232x = 98,721,115,768.70 × 38,985,645,608.94 - Step 4: Simplify right side
71,539,123,232x = 3,848,706,433,477,676,892,160 - Step 5: Solve for x
x = 3,848,706,433,477,676,892,160/71,539,123,232 - Step 6: Final answer
x = 53,798,624,579.12
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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.