Finding the Fourth Proportional to 84,248,715.20, 126,373,072.80 and 69,887,998.40
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Solution
The fourth proportional to 84,248,715.20, 126,373,072.80 and 69,887,998.40 is: 104,831,997.60
Step by Step Solution
- Step 1: Write the proportion equation
84,248,715.20 : 126,373,072.80 = 69,887,998.40 : x - Step 2: Convert to fraction form
84,248,715.20/126,373,072.80 = 69,887,998.40/x - Step 3: Cross multiply
84,248,715.20x = 126,373,072.80 × 69,887,998.40 - Step 4: Simplify right side
84,248,715.20x = 8,831,961,109,649,484 - Step 5: Solve for x
x = 8,831,961,109,649,484/84,248,715.20 - Step 6: Final answer
x = 104,831,997.60
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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.