Finding the Fourth Proportional to 77,069.68, 115,653.12 and 30,316.48
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Solution
The fourth proportional to 77,069.68, 115,653.12 and 30,316.48 is: 45,493.84
Step by Step Solution
- Step 1: Write the proportion equation
77,069.68 : 115,653.12 = 30,316.48 : x - Step 2: Convert to fraction form
77,069.68/115,653.12 = 30,316.48/x - Step 3: Cross multiply
77,069.68x = 115,653.12 × 30,316.48 - Step 4: Simplify right side
77,069.68x = 3,506,195,499.42 - Step 5: Solve for x
x = 3,506,195,499.42/77,069.68 - Step 6: Final answer
x = 45,493.84
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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.