Finding the Fourth Proportional to 74,478,612.70, 102,777,888.72 and 40,984,961.50
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Solution
The fourth proportional to 74,478,612.70, 102,777,888.72 and 40,984,961.50 is: 56,557,817.87
Step by Step Solution
- Step 1: Write the proportion equation
74,478,612.70 : 102,777,888.72 = 40,984,961.50 : x - Step 2: Convert to fraction form
74,478,612.70/102,777,888.72 = 40,984,961.50/x - Step 3: Cross multiply
74,478,612.70x = 102,777,888.72 × 40,984,961.50 - Step 4: Simplify right side
74,478,612.70x = 4,212,347,812,240,484 - Step 5: Solve for x
x = 4,212,347,812,240,484/74,478,612.70 - Step 6: Final answer
x = 56,557,817.87
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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.