Finding the Fourth Proportional to 75,418,023.99, 113,106,390.90 and 20,817,556.95
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Solution
The fourth proportional to 75,418,023.99, 113,106,390.90 and 20,817,556.95 is: 31,220,636.78
Step by Step Solution
- Step 1: Write the proportion equation
75,418,023.99 : 113,106,390.90 = 20,817,556.95 : x - Step 2: Convert to fraction form
75,418,023.99/113,106,390.90 = 20,817,556.95/x - Step 3: Cross multiply
75,418,023.99x = 113,106,390.90 × 20,817,556.95 - Step 4: Simplify right side
75,418,023.99x = 2,354,598,733,969,712 - Step 5: Solve for x
x = 2,354,598,733,969,712/75,418,023.99 - Step 6: Final answer
x = 31,220,636.78
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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.