Finding the Fourth Proportional to 63,720,688.40, 87,902,716.56 and 40,228,340.48
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Solution
The fourth proportional to 63,720,688.40, 87,902,716.56 and 40,228,340.48 is: 55,495,012.68
Step by Step Solution
- Step 1: Write the proportion equation
63,720,688.40 : 87,902,716.56 = 40,228,340.48 : x - Step 2: Convert to fraction form
63,720,688.40/87,902,716.56 = 40,228,340.48/x - Step 3: Cross multiply
63,720,688.40x = 87,902,716.56 × 40,228,340.48 - Step 4: Simplify right side
63,720,688.40x = 3,536,180,410,892,614 - Step 5: Solve for x
x = 3,536,180,410,892,614/63,720,688.40 - Step 6: Final answer
x = 55,495,012.68
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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.