Finding the Fourth Proportional to 98,777.34, 136,304.12 and 57,949.70
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Solution
The fourth proportional to 98,777.34, 136,304.12 and 57,949.70 is: 79,965.53
Step by Step Solution
- Step 1: Write the proportion equation
98,777.34 : 136,304.12 = 57,949.70 : x - Step 2: Convert to fraction form
98,777.34/136,304.12 = 57,949.70/x - Step 3: Cross multiply
98,777.34x = 136,304.12 × 57,949.70 - Step 4: Simplify right side
98,777.34x = 7,898,782,181.24 - Step 5: Solve for x
x = 7,898,782,181.24/98,777.34 - Step 6: Final answer
x = 79,965.53
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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.