Finding the Fourth Proportional to 92,611.80, 138,987.99 and 61,011.09
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Solution
The fourth proportional to 92,611.80, 138,987.99 and 61,011.09 is: 91,562.94
Step by Step Solution
- Step 1: Write the proportion equation
92,611.80 : 138,987.99 = 61,011.09 : x - Step 2: Convert to fraction form
92,611.80/138,987.99 = 61,011.09/x - Step 3: Cross multiply
92,611.80x = 138,987.99 × 61,011.09 - Step 4: Simplify right side
92,611.80x = 8,479,808,766.81 - Step 5: Solve for x
x = 8,479,808,766.81/92,611.80 - Step 6: Final answer
x = 91,562.94
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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.