Finding the Fourth Proportional to 71,118,021.60, 106,677,032.40 and 68,331,103.20
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Solution
The fourth proportional to 71,118,021.60, 106,677,032.40 and 68,331,103.20 is: 102,496,654.80
Step by Step Solution
- Step 1: Write the proportion equation
71,118,021.60 : 106,677,032.40 = 68,331,103.20 : x - Step 2: Convert to fraction form
71,118,021.60/106,677,032.40 = 68,331,103.20/x - Step 3: Cross multiply
71,118,021.60x = 106,677,032.40 × 68,331,103.20 - Step 4: Simplify right side
71,118,021.60x = 7,289,359,309,994,144 - Step 5: Solve for x
x = 7,289,359,309,994,144/71,118,021.60 - Step 6: Final answer
x = 102,496,654.80
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1.5x scale
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.