Finding the Fourth Proportional to 81,936,455.70, 122,904,683.55 and 21,352,181.70
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Solution
The fourth proportional to 81,936,455.70, 122,904,683.55 and 21,352,181.70 is: 32,028,272.55
Step by Step Solution
- Step 1: Write the proportion equation
81,936,455.70 : 122,904,683.55 = 21,352,181.70 : x - Step 2: Convert to fraction form
81,936,455.70/122,904,683.55 = 21,352,181.70/x - Step 3: Cross multiply
81,936,455.70x = 122,904,683.55 × 21,352,181.70 - Step 4: Simplify right side
81,936,455.70x = 2,624,283,134,940,601 - Step 5: Solve for x
x = 2,624,283,134,940,601/81,936,455.70 - Step 6: Final answer
x = 32,028,272.55
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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.