Finding the Fourth Proportional to 70,781,236.45, 97,681,136.79 and 39,419,285.23
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Solution
The fourth proportional to 70,781,236.45, 97,681,136.79 and 39,419,285.23 is: 54,400,301.35
Step by Step Solution
- Step 1: Write the proportion equation
70,781,236.45 : 97,681,136.79 = 39,419,285.23 : x - Step 2: Convert to fraction form
70,781,236.45/97,681,136.79 = 39,419,285.23/x - Step 3: Cross multiply
70,781,236.45x = 97,681,136.79 × 39,419,285.23 - Step 4: Simplify right side
70,781,236.45x = 3,850,520,592,715,656.50 - Step 5: Solve for x
x = 3,850,520,592,715,656.50/70,781,236.45 - Step 6: Final answer
x = 54,400,301.35
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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.