Finding the Fourth Proportional to 77,135.42, 115,720.50 and 27,219.08
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Solution
The fourth proportional to 77,135.42, 115,720.50 and 27,219.08 is: 40,834.75
Step by Step Solution
- Step 1: Write the proportion equation
77,135.42 : 115,720.50 = 27,219.08 : x - Step 2: Convert to fraction form
77,135.42/115,720.50 = 27,219.08/x - Step 3: Cross multiply
77,135.42x = 115,720.50 × 27,219.08 - Step 4: Simplify right side
77,135.42x = 3,149,805,547.14 - Step 5: Solve for x
x = 3,149,805,547.14/77,135.42 - Step 6: Final answer
x = 40,834.75
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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.