Finding the Fourth Proportional to 65,354,438.19, 90,023,031.68 and 49,857,618.63
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Solution
The fourth proportional to 65,354,438.19, 90,023,031.68 and 49,857,618.63 is: 68,676,804.60
Step by Step Solution
- Step 1: Write the proportion equation
65,354,438.19 : 90,023,031.68 = 49,857,618.63 : x - Step 2: Convert to fraction form
65,354,438.19/90,023,031.68 = 49,857,618.63/x - Step 3: Cross multiply
65,354,438.19x = 90,023,031.68 × 49,857,618.63 - Step 4: Simplify right side
65,354,438.19x = 4,488,333,981,168,560 - Step 5: Solve for x
x = 4,488,333,981,168,560/65,354,438.19 - Step 6: Final answer
x = 68,676,804.60
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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.