Finding the Fourth Proportional to 76,903,677.40, 115,355,516.10 and 71,064,419.80
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Solution
The fourth proportional to 76,903,677.40, 115,355,516.10 and 71,064,419.80 is: 106,596,629.70
Step by Step Solution
- Step 1: Write the proportion equation
76,903,677.40 : 115,355,516.10 = 71,064,419.80 : x - Step 2: Convert to fraction form
76,903,677.40/115,355,516.10 = 71,064,419.80/x - Step 3: Cross multiply
76,903,677.40x = 115,355,516.10 × 71,064,419.80 - Step 4: Simplify right side
76,903,677.40x = 8,197,672,822,376,058 - Step 5: Solve for x
x = 8,197,672,822,376,058/76,903,677.40 - Step 6: Final answer
x = 106,596,629.70
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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.