Finding the Fourth Proportional to 79,781,610.40, 119,672,415.60 and 31,243,332.40
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Solution
The fourth proportional to 79,781,610.40, 119,672,415.60 and 31,243,332.40 is: 46,864,998.60
Step by Step Solution
- Step 1: Write the proportion equation
79,781,610.40 : 119,672,415.60 = 31,243,332.40 : x - Step 2: Convert to fraction form
79,781,610.40/119,672,415.60 = 31,243,332.40/x - Step 3: Cross multiply
79,781,610.40x = 119,672,415.60 × 31,243,332.40 - Step 4: Simplify right side
79,781,610.40x = 3,738,965,059,701,745 - Step 5: Solve for x
x = 3,738,965,059,701,745/79,781,610.40 - Step 6: Final answer
x = 46,864,998.60
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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.