Finding the Fourth Proportional to 77,811.12, 107,379.84 and 44,277.12
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Solution
The fourth proportional to 77,811.12, 107,379.84 and 44,277.12 is: 61,102.71
Step by Step Solution
- Step 1: Write the proportion equation
77,811.12 : 107,379.84 = 44,277.12 : x - Step 2: Convert to fraction form
77,811.12/107,379.84 = 44,277.12/x - Step 3: Cross multiply
77,811.12x = 107,379.84 × 44,277.12 - Step 4: Simplify right side
77,811.12x = 4,754,470,061.26 - Step 5: Solve for x
x = 4,754,470,061.26/77,811.12 - Step 6: Final answer
x = 61,102.71
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1.5x scale
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.