Finding the Fourth Proportional to 77,940.05, 107,557.27 and 56,737.09
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Solution
The fourth proportional to 77,940.05, 107,557.27 and 56,737.09 is: 78,297.17
Step by Step Solution
- Step 1: Write the proportion equation
77,940.05 : 107,557.27 = 56,737.09 : x - Step 2: Convert to fraction form
77,940.05/107,557.27 = 56,737.09/x - Step 3: Cross multiply
77,940.05x = 107,557.27 × 56,737.09 - Step 4: Simplify right side
77,940.05x = 6,102,485,686.67 - Step 5: Solve for x
x = 6,102,485,686.67/77,940.05 - Step 6: Final answer
x = 78,297.17
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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.