Finding the Fourth Proportional to 41,987,910.40, 63,009,859.20 and 19,257,107.20
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Solution
The fourth proportional to 41,987,910.40, 63,009,859.20 and 19,257,107.20 is: 28,898,499.63
Step by Step Solution
- Step 1: Write the proportion equation
41,987,910.40 : 63,009,859.20 = 19,257,107.20 : x - Step 2: Convert to fraction form
41,987,910.40/63,009,859.20 = 19,257,107.20/x - Step 3: Cross multiply
41,987,910.40x = 63,009,859.20 × 19,257,107.20 - Step 4: Simplify right side
41,987,910.40x = 1,213,387,613,271,306.25 - Step 5: Solve for x
x = 1,213,387,613,271,306.25/41,987,910.40 - Step 6: Final answer
x = 28,898,499.63
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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.