Finding the Fourth Proportional to 81,534,778.56, 122,306,453.28 and 20,950,914.24
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Solution
The fourth proportional to 81,534,778.56, 122,306,453.28 and 20,950,914.24 is: 31,427,472.53
Step by Step Solution
- Step 1: Write the proportion equation
81,534,778.56 : 122,306,453.28 = 20,950,914.24 : x - Step 2: Convert to fraction form
81,534,778.56/122,306,453.28 = 20,950,914.24/x - Step 3: Cross multiply
81,534,778.56x = 122,306,453.28 × 20,950,914.24 - Step 4: Simplify right side
81,534,778.56x = 2,562,432,013,667,846.50 - Step 5: Solve for x
x = 2,562,432,013,667,846.50/81,534,778.56 - Step 6: Final answer
x = 31,427,472.53
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1.5x scale
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.