Finding the Fourth Proportional to 86,701.20, 130,051.80 and 49,246.80
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Solution
The fourth proportional to 86,701.20, 130,051.80 and 49,246.80 is: 73,870.20
Step by Step Solution
- Step 1: Write the proportion equation
86,701.20 : 130,051.80 = 49,246.80 : x - Step 2: Convert to fraction form
86,701.20/130,051.80 = 49,246.80/x - Step 3: Cross multiply
86,701.20x = 130,051.80 × 49,246.80 - Step 4: Simplify right side
86,701.20x = 6,404,634,984.24 - Step 5: Solve for x
x = 6,404,634,984.24/86,701.20 - Step 6: Final answer
x = 73,870.20
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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.