Finding the Fourth Proportional to 77,858.21, 116,859.95 and 39,935.94
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Solution
The fourth proportional to 77,858.21, 116,859.95 and 39,935.94 is: 59,941.17
Step by Step Solution
- Step 1: Write the proportion equation
77,858.21 : 116,859.95 = 39,935.94 : x - Step 2: Convert to fraction form
77,858.21/116,859.95 = 39,935.94/x - Step 3: Cross multiply
77,858.21x = 116,859.95 × 39,935.94 - Step 4: Simplify right side
77,858.21x = 4,666,911,751.92 - Step 5: Solve for x
x = 4,666,911,751.92/77,858.21 - Step 6: Final answer
x = 59,941.17
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1.5x scale
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.