Finding the Fourth Proportional to 81,255,775.12, 121,811,917.36 and 62,171,728.81
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Solution
The fourth proportional to 81,255,775.12, 121,811,917.36 and 62,171,728.81 is: 93,202,698.27
Step by Step Solution
- Step 1: Write the proportion equation
81,255,775.12 : 121,811,917.36 = 62,171,728.81 : x - Step 2: Convert to fraction form
81,255,775.12/121,811,917.36 = 62,171,728.81/x - Step 3: Cross multiply
81,255,775.12x = 121,811,917.36 × 62,171,728.81 - Step 4: Simplify right side
81,255,775.12x = 7,573,257,491,012,133 - Step 5: Solve for x
x = 7,573,257,491,012,133/81,255,775.12 - Step 6: Final answer
x = 93,202,698.27
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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.