Finding the Fourth Proportional to 45,406,107.20, 68,108,981.60 and 13,493,403.20
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Solution
The fourth proportional to 45,406,107.20, 68,108,981.60 and 13,493,403.20 is: 20,240,051.55
Step by Step Solution
- Step 1: Write the proportion equation
45,406,107.20 : 68,108,981.60 = 13,493,403.20 : x - Step 2: Convert to fraction form
45,406,107.20/68,108,981.60 = 13,493,403.20/x - Step 3: Cross multiply
45,406,107.20x = 68,108,981.60 × 13,493,403.20 - Step 4: Simplify right side
45,406,107.20x = 919,021,950,270,181 - Step 5: Solve for x
x = 919,021,950,270,181/45,406,107.20 - Step 6: Final answer
x = 20,240,051.55
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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.