Finding the Fourth Proportional to 7,145,120.24, 9,860,213.08 and 3,881,961.80
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Solution
The fourth proportional to 7,145,120.24, 9,860,213.08 and 3,881,961.80 is: 5,357,078.57
Step by Step Solution
- Step 1: Write the proportion equation
7,145,120.24 : 9,860,213.08 = 3,881,961.80 : x - Step 2: Convert to fraction form
7,145,120.24/9,860,213.08 = 3,881,961.80/x - Step 3: Cross multiply
7,145,120.24x = 9,860,213.08 × 3,881,961.80 - Step 4: Simplify right side
7,145,120.24x = 38,276,970,516,420.34 - Step 5: Solve for x
x = 38,276,970,516,420.34/7,145,120.24 - Step 6: Final answer
x = 5,357,078.57
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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.