Finding the Fourth Proportional to 76,912,497.30, 106,139,251.48 and 42,105,187.74
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Solution
The fourth proportional to 76,912,497.30, 106,139,251.48 and 42,105,187.74 is: 58,105,161.93
Step by Step Solution
- Step 1: Write the proportion equation
76,912,497.30 : 106,139,251.48 = 42,105,187.74 : x - Step 2: Convert to fraction form
76,912,497.30/106,139,251.48 = 42,105,187.74/x - Step 3: Cross multiply
76,912,497.30x = 106,139,251.48 × 42,105,187.74 - Step 4: Simplify right side
76,912,497.30x = 4,469,013,110,148,473.50 - Step 5: Solve for x
x = 4,469,013,110,148,473.50/76,912,497.30 - Step 6: Final answer
x = 58,105,161.93
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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.