Finding the Fourth Proportional to 77,977,620.84, 107,627,202.18 and 51,873,238.92
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Solution
The fourth proportional to 77,977,620.84, 107,627,202.18 and 51,873,238.92 is: 71,597,100.72
Step by Step Solution
- Step 1: Write the proportion equation
77,977,620.84 : 107,627,202.18 = 51,873,238.92 : x - Step 2: Convert to fraction form
77,977,620.84/107,627,202.18 = 51,873,238.92/x - Step 3: Cross multiply
77,977,620.84x = 107,627,202.18 × 51,873,238.92 - Step 4: Simplify right side
77,977,620.84x = 5,582,971,572,974,285 - Step 5: Solve for x
x = 5,582,971,572,974,285/77,977,620.84 - Step 6: Final answer
x = 71,597,100.72
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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.