Finding the Fourth Proportional to 76,962,961.70, 106,219,453.67 and 47,188,342.71
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Solution
The fourth proportional to 76,962,961.70, 106,219,453.67 and 47,188,342.71 is: 65,126,391.60
Step by Step Solution
- Step 1: Write the proportion equation
76,962,961.70 : 106,219,453.67 = 47,188,342.71 : x - Step 2: Convert to fraction form
76,962,961.70/106,219,453.67 = 47,188,342.71/x - Step 3: Cross multiply
76,962,961.70x = 106,219,453.67 × 47,188,342.71 - Step 4: Simplify right side
76,962,961.70x = 5,012,319,982,248,927 - Step 5: Solve for x
x = 5,012,319,982,248,927/76,962,961.70 - Step 6: Final answer
x = 65,126,391.60
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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.