Finding the Fourth Proportional to 78,996,893.70, 118,495,340.55 and 40,733,141.70
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Solution
The fourth proportional to 78,996,893.70, 118,495,340.55 and 40,733,141.70 is: 61,099,712.55
Step by Step Solution
- Step 1: Write the proportion equation
78,996,893.70 : 118,495,340.55 = 40,733,141.70 : x - Step 2: Convert to fraction form
78,996,893.70/118,495,340.55 = 40,733,141.70/x - Step 3: Cross multiply
78,996,893.70x = 118,495,340.55 × 40,733,141.70 - Step 4: Simplify right side
78,996,893.70x = 4,826,687,497,412,906 - Step 5: Solve for x
x = 4,826,687,497,412,906/78,996,893.70 - Step 6: Final answer
x = 61,099,712.55
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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.