Finding the Fourth Proportional to 57,872,712.77, 79,864,431.11 and 31,411,076.09
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Solution
The fourth proportional to 57,872,712.77, 79,864,431.11 and 31,411,076.09 is: 43,347,332.48
Step by Step Solution
- Step 1: Write the proportion equation
57,872,712.77 : 79,864,431.11 = 31,411,076.09 : x - Step 2: Convert to fraction form
57,872,712.77/79,864,431.11 = 31,411,076.09/x - Step 3: Cross multiply
57,872,712.77x = 79,864,431.11 × 31,411,076.09 - Step 4: Simplify right side
57,872,712.77x = 2,508,627,722,178,344 - Step 5: Solve for x
x = 2,508,627,722,178,344/57,872,712.77 - Step 6: Final answer
x = 43,347,332.48
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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.