Finding the Fourth Proportional to 77,424.97, 115,940.64 and 70,929.58
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Solution
The fourth proportional to 77,424.97, 115,940.64 and 70,929.58 is: 106,214.07
Step by Step Solution
- Step 1: Write the proportion equation
77,424.97 : 115,940.64 = 70,929.58 : x - Step 2: Convert to fraction form
77,424.97/115,940.64 = 70,929.58/x - Step 3: Cross multiply
77,424.97x = 115,940.64 × 70,929.58 - Step 4: Simplify right side
77,424.97x = 8,223,620,900.13 - Step 5: Solve for x
x = 8,223,620,900.13/77,424.97 - Step 6: Final answer
x = 106,214.07
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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.