Finding the Fourth Proportional to 78,364,154.81, 117,290,450.94 and 57,609,098.81
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Solution
The fourth proportional to 78,364,154.81, 117,290,450.94 and 57,609,098.81 is: 86,225,611.62
Step by Step Solution
- Step 1: Write the proportion equation
78,364,154.81 : 117,290,450.94 = 57,609,098.81 : x - Step 2: Convert to fraction form
78,364,154.81/117,290,450.94 = 57,609,098.81/x - Step 3: Cross multiply
78,364,154.81x = 117,290,450.94 × 57,609,098.81 - Step 4: Simplify right side
78,364,154.81x = 6,756,997,177,671,918 - Step 5: Solve for x
x = 6,756,997,177,671,918/78,364,154.81 - Step 6: Final answer
x = 86,225,611.62
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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.