Finding the Fourth Proportional to 75,211,990.84, 103,754,348.56 and 49,121,780.68
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Solution
The fourth proportional to 75,211,990.84, 103,754,348.56 and 49,121,780.68 is: 67,763,109.28
Step by Step Solution
- Step 1: Write the proportion equation
75,211,990.84 : 103,754,348.56 = 49,121,780.68 : x - Step 2: Convert to fraction form
75,211,990.84/103,754,348.56 = 49,121,780.68/x - Step 3: Cross multiply
75,211,990.84x = 103,754,348.56 × 49,121,780.68 - Step 4: Simplify right side
75,211,990.84x = 5,096,598,354,560,594 - Step 5: Solve for x
x = 5,096,598,354,560,594/75,211,990.84 - Step 6: Final answer
x = 67,763,109.28
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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.