Finding the Fourth Proportional to 77,968.24, 107,596.11 and 42,158.23
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Solution
The fourth proportional to 77,968.24, 107,596.11 and 42,158.23 is: 58,178.32
Step by Step Solution
- Step 1: Write the proportion equation
77,968.24 : 107,596.11 = 42,158.23 : x - Step 2: Convert to fraction form
77,968.24/107,596.11 = 42,158.23/x - Step 3: Cross multiply
77,968.24x = 107,596.11 × 42,158.23 - Step 4: Simplify right side
77,968.24x = 4,536,061,552.49 - Step 5: Solve for x
x = 4,536,061,552.49/77,968.24 - Step 6: Final answer
x = 58,178.32
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1.5x scale
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.