Finding the Fourth Proportional to 92,193.80, 138,220.50 and 42,288.08
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Solution
The fourth proportional to 92,193.80, 138,220.50 and 42,288.08 is: 63,399.92
Step by Step Solution
- Step 1: Write the proportion equation
92,193.80 : 138,220.50 = 42,288.08 : x - Step 2: Convert to fraction form
92,193.80/138,220.50 = 42,288.08/x - Step 3: Cross multiply
92,193.80x = 138,220.50 × 42,288.08 - Step 4: Simplify right side
92,193.80x = 5,845,079,561.64 - Step 5: Solve for x
x = 5,845,079,561.64/92,193.80 - Step 6: Final answer
x = 63,399.92
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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.