Finding the Fourth Proportional to 85,042,406.39, 117,394,797.19 and 57,181,265.99
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Solution
The fourth proportional to 85,042,406.39, 117,394,797.19 and 57,181,265.99 is: 78,934,538.77
Step by Step Solution
- Step 1: Write the proportion equation
85,042,406.39 : 117,394,797.19 = 57,181,265.99 : x - Step 2: Convert to fraction form
85,042,406.39/117,394,797.19 = 57,181,265.99/x - Step 3: Cross multiply
85,042,406.39x = 117,394,797.19 × 57,181,265.99 - Step 4: Simplify right side
85,042,406.39x = 6,712,783,123,963,495 - Step 5: Solve for x
x = 6,712,783,123,963,495/85,042,406.39 - Step 6: Final answer
x = 78,934,538.77
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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.